FVP: apply new naming conventions to memory regions

Secure ROM at address 0x0000_0000 is defined as FVP_TRUSTED_ROM
Secure RAM at address 0x0400_0000 is defined as FVP_TRUSTED_SRAM
Secure RAM at address 0x0600_0000 is defined as FVP_TRUSTED_DRAM

BLn_BASE and BLn_LIMIT definitions have been updated and are based on
these new memory regions.

The available memory for each bootloader in the linker script is
defined by BLn_BASE and BLn_LIMIT, instead of the complete memory
region.

TZROM_BASE/SIZE and TZRAM_BASE/SIZE are no longer required as part of
the platform porting.

FVP common definitions are defined in fvp_def.h while platform_def.h
contains exclusively (with a few exceptions) the definitions that are
mandatory in the porting guide. Therefore, platform_def.h now includes
fvp_def.h instead of the other way around.

Porting guide has been updated to reflect these changes.

Change-Id: I39a6088eb611fc4a347db0db4b8f1f0417dbab05
diff --git a/plat/fvp/platform.mk b/plat/fvp/platform.mk
index f6275b7..945a300 100644
--- a/plat/fvp/platform.mk
+++ b/plat/fvp/platform.mk
@@ -30,18 +30,17 @@
 
 # On FVP, the TSP can execute either from Trusted SRAM or Trusted DRAM.
 # Trusted SRAM is the default.
-TSP_RAM_LOCATION	:=	tsram
-
-ifeq (${TSP_RAM_LOCATION}, tsram)
-  TSP_RAM_LOCATION_ID := TSP_IN_TZRAM
-else ifeq (${TSP_RAM_LOCATION}, tdram)
-  TSP_RAM_LOCATION_ID := TSP_IN_TZDRAM
+FVP_TSP_RAM_LOCATION	:=	tsram
+ifeq (${FVP_TSP_RAM_LOCATION}, tsram)
+  FVP_TSP_RAM_LOCATION_ID := FVP_IN_TRUSTED_SRAM
+else ifeq (${FVP_TSP_RAM_LOCATION}, tdram)
+  FVP_TSP_RAM_LOCATION_ID := FVP_IN_TRUSTED_DRAM
 else
-  $(error "Unsupported TSP_RAM_LOCATION value")
+  $(error "Unsupported FVP_TSP_RAM_LOCATION value")
 endif
 
-# Process TSP_RAM_LOCATION_ID flag
-$(eval $(call add_define,TSP_RAM_LOCATION_ID))
+# Process flags
+$(eval $(call add_define,FVP_TSP_RAM_LOCATION_ID))
 
 PLAT_INCLUDES		:=	-Iplat/fvp/include/