F15tn: Fix all warnings, enable warnings as errors

Enable 'all warnings being treated as errors' in thatcher and parmer.

Fixed the following warnings on parmer / thatcher:
src/vendorcode/amd/agesa/f15tn/Proc/CPU/Feature/cpuFeatureLeveling.c:
 In function 'GetGlobalCpuFeatureListAddress':
src/vendorcode/amd/agesa/f15tn/Proc/CPU/Feature/cpuFeatureLeveling.c:291:14:
 warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

src/vendorcode/amd/agesa/f15tn/Proc/CPU/S3.c:
 In function 'SaveDeviceContext':
src/vendorcode/amd/agesa/f15tn/Proc/CPU/S3.c:245:18:
 warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
src/vendorcode/amd/agesa/f15tn/Proc/CPU/S3.c:309:16:
 warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

src/vendorcode/amd/agesa/f15tn/Proc/CPU/cpuPostInit.c:
 In function 'GetPstateGatherDataAddressAtPost':
src/vendorcode/amd/agesa/f15tn/Proc/CPU/cpuPostInit.c:235:10:
 warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

src/vendorcode/amd/agesa/f15tn/Proc/Mem/NB/TN/mntn.c:
 In function 'MemNInitNBDataTN':
src/vendorcode/amd/agesa/f15tn/Proc/Mem/NB/TN/mntn.c:353:32:
 warning: assignment from incompatible pointer type [enabled by default]
src/vendorcode/amd/agesa/f15tn/Proc/Mem/NB/TN/mntn.c:363:23:
 warning: assignment from incompatible pointer type [enabled by default]

src/vendorcode/amd/agesa/f15tn/Proc/CPU/Feature/cpuFeatureLeveling.c:
 In function 'GetGlobalCpuFeatureListAddress':
src/vendorcode/amd/agesa/f15tn/Proc/CPU/Feature/cpuFeatureLeveling.c:291:14:
 warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

src/vendorcode/amd/agesa/f15tn/Proc/CPU/S3.c:
 In function 'SaveDeviceContext':
src/vendorcode/amd/agesa/f15tn/Proc/CPU/S3.c:245:18:
 warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
src/vendorcode/amd/agesa/f15tn/Proc/CPU/S3.c:309:16:
 warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

In file included from src/northbridge/amd/agesa/family15tn/northbridge.c:37:0:
src/vendorcode/amd/agesa/f15tn/AGESA.h:1547:0:
 warning: "TOP_MEM" redefined [enabled by default]
src/include/cpu/amd/mtrr.h:31:0:
 note: this is the location of the previous definition
src/vendorcode/amd/agesa/f15tn/AGESA.h:1548:0:
 warning: "TOP_MEM2" redefined [enabled by default]
src/include/cpu/amd/mtrr.h:34:0:
 note: this is the location of the previous definition
In file included from src/northbridge/amd/agesa/family15tn/northbridge.c:41:0:
src/vendorcode/amd/agesa/f15tn/Proc/CPU/cpuRegisters.h:378:0:
 warning: "LOCAL_APIC_ADDR" redefined [enabled by default]
src/include/cpu/x86/lapic_def.h:9:0: note:
 this is the location of the previous definition

In file included from src/mainboard/amd/parmer/BiosCallOuts.h:24:0,
                 from src/mainboard/amd/parmer/mainboard.c:28:
src/vendorcode/amd/agesa/f15tn/AGESA.h:1547:0:
 warning: "TOP_MEM" redefined [enabled by default]
src/include/cpu/amd/mtrr.h:31:0:
 note: this is the location of the previous definition
src/vendorcode/amd/agesa/f15tn/AGESA.h:1548:0:
 warning: "TOP_MEM2" redefined [enabled by default]
src/include/cpu/amd/mtrr.h:34:0: note:
 this is the location of the previous definition

Change-Id: Iecea28232f1761401cf09f7d2a77d3fbac2f5801
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/2171
Tested-by: build bot (Jenkins)
Reviewed-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
diff --git a/src/northbridge/amd/agesa/family15tn/northbridge.c b/src/northbridge/amd/agesa/family15tn/northbridge.c
index df632e3..a22fc9d 100644
--- a/src/northbridge/amd/agesa/family15tn/northbridge.c
+++ b/src/northbridge/amd/agesa/family15tn/northbridge.c
@@ -29,12 +29,12 @@
 #include <lib.h>
 #include <cpu/cpu.h>
 #include <cbmem.h>
+#include <AGESA.h>
 
 #include <cpu/x86/lapic.h>
 #include <cpu/amd/mtrr.h>
 
 #include <Porting.h>
-#include <AGESA.h>
 #include <Options.h>
 #include <Topology.h>
 #include <cpu/amd/amdfam15.h>