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/XPEDITE5370.h b/include/configs/XPEDITE5370.h
index 634ba74..24ee65e 100644
--- a/include/configs/XPEDITE5370.h
+++ b/include/configs/XPEDITE5370.h
@@ -38,6 +38,10 @@
 #define CONFIG_SYS_BOARD_NAME	"XPedite5370"
 #define CONFIG_BOARD_EARLY_INIT_R	/* Call board_pre_init */
 
+#ifndef CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_TEXT_BASE	0xfff80000
+#endif
+
 #define CONFIG_PCI		1	/* Enable PCI/PCIE */
 #define CONFIG_PCI_PNP		1	/* do pci plug-and-play */
 #define CONFIG_PCI_SCAN_SHOW	1	/* show pci devices on startup */