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/IP860.h b/include/configs/IP860.h
index ed6b7fd..eef1d6b 100644
--- a/include/configs/IP860.h
+++ b/include/configs/IP860.h
@@ -35,6 +35,9 @@
 
 #define CONFIG_MPC860		1	/* This is a MPC860 CPU		*/
 #define CONFIG_IP860		1	/* ...on a IP860 board		*/
+
+#define	CONFIG_SYS_TEXT_BASE	0x10000000
+
 #define CONFIG_BOARD_EARLY_INIT_F 1	/* Call board_early_init_f	*/
 #define CONFIG_RESET_PHY_R	1	/* Call reset_phy()		*/