MPC85xx: TQM8548: add support for the TQM8548_AG module

The TQM8548_AG is a variant of the TQM8548 module with 1 GiB memory,
CAN and without PCI/PCI-X and RTC. U-Boot can be built for this module
with "$ make TQM8548_AG_config".

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
diff --git a/Makefile b/Makefile
index 4e96ef6..ee82c5d 100644
--- a/Makefile
+++ b/Makefile
@@ -2479,12 +2479,13 @@
 TQM8540_config		\
 TQM8541_config		\
 TQM8548_config		\
+TQM8548_AG_config	\
 TQM8548_BE_config	\
 TQM8555_config		\
 TQM8560_config:		unconfig
 	@mkdir -p $(obj)include
 	@BTYPE=$(@:_config=); \
-	CTYPE=$(subst TQM,,$(subst _BE,,$(@:_config=))); \
+	CTYPE=$(subst TQM,,$(subst _AG,,$(subst _BE,,$(@:_config=)))); \
 	$(XECHO) "... "$${BTYPE}" (MPC"$${CTYPE}")"; \
 	echo "#define CONFIG_MPC$${CTYPE}">>$(obj)include/config.h; \
 	echo "#define CONFIG_$${BTYPE}">>$(obj)include/config.h; \