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/MPC8555CDS.h b/include/configs/MPC8555CDS.h
index b22f4d0..7bc1bce 100644
--- a/include/configs/MPC8555CDS.h
+++ b/include/configs/MPC8555CDS.h
@@ -37,6 +37,8 @@
 #define CONFIG_MPC8555		1	/* MPC8555 specific */
 #define CONFIG_MPC8555CDS	1	/* MPC8555CDS board specific */
 
+#define	CONFIG_SYS_TEXT_BASE	0xfff80000
+
 #define CONFIG_PCI
 #define CONFIG_SYS_PCI_64BIT	1	/* enable 64-bit PCI resources */
 #define CONFIG_TSEC_ENET		/* tsec ethernet support */