ppc4xx: Update CPCI405 variants handling

This patch replaces the BOARD_REVISION variable in include/config.mk
by a using a temporary include file in the platform directory.

The former way does not work anymore and the latter is also used by
some other boards.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Signed-off-by: Stefan Roese <sr@denx.de>

Makefile

@@ -1242,12 +1242,14 @@ CMS700_config:	unconfig
 CPCI2DP_config:	unconfig
 	@$(MKCONFIG) $(@:_config=) ppc ppc4xx cpci2dp esd
 
-CPCI405_config	\
-CPCI4052_config	\
+CPCI405_config:		unconfig
+	@$(MKCONFIG) $(@:_config=) ppc ppc4xx cpci405 esd
+
+CPCI4052_config		\
 CPCI405DT_config	\
 CPCI405AB_config:	unconfig
+	@echo "TEXT_BASE = 0xFFFC0000" > $(obj)board/esd/cpci405/config.tmp
 	@$(MKCONFIG) $(@:_config=) ppc ppc4xx cpci405 esd
-	@echo "BOARD_REVISION = $(@:_config=)"	>> $(obj)include/config.mk
 
 CPCIISER4_config:	unconfig
 	@$(MKCONFIG) $(@:_config=) ppc ppc4xx cpciiser4 esd

board/esd/cpci405/config.mk

@@ -21,20 +21,8 @@
 # MA 02111-1307 USA
 #
 
-#
-# esd CPCI405 boards
-#
+sinclude $(OBJTREE)/board/$(BOARDDIR)/config.tmp
 
-ifeq ($(BOARD_REVISION),CPCI4052)
-TEXT_BASE = 0xFFFC0000
-else
-ifeq ($(BOARD_REVISION),CPCI405DT)
-TEXT_BASE = 0xFFFC0000
-else
-ifeq ($(BOARD_REVISION),CPCI405AB)
-TEXT_BASE = 0xFFFC0000
-else
+ifndef TEXT_BASE
 TEXT_BASE = 0xFFFD0000
 endif
-endif
-endif