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/QS823.h b/include/configs/QS823.h
index c1416cb..df9376c 100644
--- a/include/configs/QS823.h
+++ b/include/configs/QS823.h
@@ -53,6 +53,8 @@
 #define CONFIG_QS823		1	/* ...on a QS823 module */
 #define CONFIG_SCC2_ENET	1	/* SCC2 10BaseT ethernet */
 
+#define	CONFIG_SYS_TEXT_BASE	0xFFF00000
+
 /* Select the target clock speed */
 #undef CONFIG_CLOCK_16MHZ		/* cpu=16,777,216 Hz, mem=16Mhz */
 #undef CONFIG_CLOCK_33MHZ		/* cpu=33,554,432 Hz, mem=33Mhz */