AMD southbridge: remove sp5100

Southbridge SP5100 support was compiled with SB700 code, but static
device info structure would use sp5100/chip.h. To solve this drop
support for separate chip sp5100 and adjust the relevant Kconfig
options.

Removes chip directory:
  src/southbridge/amd/sp5100/

Rename Kconfig option
 from: SOUTHBRIDGE_AMD_SP5100
   to: SOUTHBRIDGE_AMD_SUBTYPE_SP5100

Change-Id: I873c6ad3624ee69165da6ab7287dfb7e006ee8e8
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/679
Tested-by: build bot (Jenkins)
Reviewed-by: Zheng Bao <zheng.bao@amd.com>
Reviewed-by: Marc Jones <marcj303@gmail.com>
diff --git a/src/mainboard/supermicro/h8scm_fam10/devicetree.cb b/src/mainboard/supermicro/h8scm_fam10/devicetree.cb
index c6ccecb..9aa4406 100644
--- a/src/mainboard/supermicro/h8scm_fam10/devicetree.cb
+++ b/src/mainboard/supermicro/h8scm_fam10/devicetree.cb
@@ -36,7 +36,7 @@
 					register "gpp3a_configuration" = "11"   # Configuration 1:1:1:1:1:1
 					register "port_enable" = "0x1ffc"
 				end
-				chip southbridge/amd/sp5100 # it is under NB/SB Link, but on the same pri bus
+				chip southbridge/amd/sb700 # (model:sp5100) it is under NB/SB Link, but on the same pri bus
 					device pci 11.0 on end # SATA
 					device pci 12.0 on end # USB
 					device pci 12.1 on end # USB
@@ -92,7 +92,7 @@
 					device pci 14.4 on end # PCI 0x4384
 					device pci 14.5 on end # USB 2
 					register "boot_switch_sata_ide" = "0"   # 0: boot from SATA. 1: IDE
-				end	#southbridge/amd/sp5100
+				end	#southbridge/amd/sb700
 			end #  device pci 18.0
 			device pci 18.1 on end
 			device pci 18.2 on end