Drop prototype guarding for romcc

Commit "romcc: Don't fail on function prototypes" (11a7db3b) [1]
made romcc not choke on function prototypes anymore. This
allows us to get rid of a lot of ifdefs guarding __ROMCC__ .

[1] http://review.coreboot.org/2424

Change-Id: Ib1be3b294e5b49f5101f2e02ee1473809109c8ac
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/3216
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/include/cpu/amd/lxdef.h b/src/include/cpu/amd/lxdef.h
index 632bfe2..4eee156 100644
--- a/src/include/cpu/amd/lxdef.h
+++ b/src/include/cpu/amd/lxdef.h
@@ -630,7 +630,7 @@
 #define DELAY_UPPER_DISABLE_CLK135	(1 << 23)
 #define DELAY_LOWER_STATUS_MASK		0x7C0
 
-#if !defined(__ROMCC__)  && !defined(__ASSEMBLER__)
+#if !defined(__ASSEMBLER__)
 #if defined(__PRE_RAM__)
 void cpuRegInit(int debug_clock_disable, u8 dimm0, u8 dimm1, int terminated);
 void SystemPreInit(void);