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/MPC8572DS.h b/include/configs/MPC8572DS.h
index 9601029..336d62d 100644
--- a/include/configs/MPC8572DS.h
+++ b/include/configs/MPC8572DS.h
@@ -41,6 +41,10 @@
 #define CONFIG_MPC8572DS	1
 #define CONFIG_MP		1	/* support multiple processors */
 
+#ifndef CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_TEXT_BASE	0xeff80000
+#endif
+
 #define CONFIG_FSL_ELBC		1	/* Has Enhanced localbus controller */
 #define CONFIG_PCI		1	/* Enable PCI/PCIE */
 #define CONFIG_PCIE1		1	/* PCIE controler 1 (slot 1) */