Makefile: move all Power Architecture boards into boards.cfg

Clean up Makefile, and drop a lot of the config.mk files on the way.

We now also automatically pick all boards that are listed in
boards.cfg (and with all configurations), so we can drop the redundant
entries from MAKEALL to avoid building these twice.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/include/configs/W7OLMG.h b/include/configs/W7OLMG.h
index f12fa55..0144fbd 100644
--- a/include/configs/W7OLMG.h
+++ b/include/configs/W7OLMG.h
@@ -38,6 +38,8 @@
 #define CONFIG_W7O		1		/* ...on a Wave 7 Optics board	*/
 #define CONFIG_W7OLMG		1		/* ...specifically an LMG	*/
 
+#define	CONFIG_SYS_TEXT_BASE	0xFFFC0000
+
 #define CONFIG_BOARD_EARLY_INIT_F 1		/* Call board_early_init_f	*/
 #define	CONFIG_MISC_INIT_F	1		/* and misc_init_f()		*/
 #define	CONFIG_MISC_INIT_R	1		/* and misc_init_r()		*/