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/VoVPN-GW.h b/include/configs/VoVPN-GW.h
index 8f8b55e..805764a 100644
--- a/include/configs/VoVPN-GW.h
+++ b/include/configs/VoVPN-GW.h
@@ -29,6 +29,8 @@
 /* define busmode: 8260 */
 #undef	CONFIG_BUSMODE_60x
 
+#define	CONFIG_SYS_TEXT_BASE		0xfff00000
+
 /* system clock rate (CLKIN) - equal to the 60x and local bus speed */
 #ifdef	CONFIG_CLKIN_66MHz
 #define	CONFIG_8260_CLKIN		66666666	/* in Hz */