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/TOP860.h b/include/configs/TOP860.h
index 4bbd42a..8bc87e3 100644
--- a/include/configs/TOP860.h
+++ b/include/configs/TOP860.h
@@ -53,6 +53,9 @@
 #define CONFIG_MPC860	1	/* This is a MPC860 CPU		*/
 #define CONFIG_MPC860T	1	/* even better... an FEC!	*/
 #define CONFIG_TOP860	1	/* ...on a TOP860 module	*/
+
+#define	CONFIG_SYS_TEXT_BASE	0x80000000
+
 #undef	CONFIG_WATCHDOG			/* watchdog disabled		*/
 #define	CONFIG_IDENT_STRING " EMK TOP860"