arm: Introduce arch/arm/mach-omap2 for OMAP2 derivative platforms

This moves what was in arch/arm/cpu/armv7/omap-common in to
arch/arm/mach-omap2 and moves
arch/arm/cpu/armv7/{am33xx,omap3,omap4,omap5} in to arch/arm/mach-omap2
as subdirectories.  All refernces to the former locations are updated to
the current locations.  For the logic to decide what our outputs are,
consolidate the tests into a single config.mk rather than including 4.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/am335x_sl50.h b/include/configs/am335x_sl50.h
index 9795d41..ca5bb1a 100644
--- a/include/configs/am335x_sl50.h
+++ b/include/configs/am335x_sl50.h
@@ -86,7 +86,7 @@
 #define CONFIG_BOOTCOUNT_AM33XX
 #define CONFIG_SYS_BOOTCOUNT_BE
 
-#define CONFIG_SPL_LDSCRIPT		"$(CPUDIR)/am33xx/u-boot-spl.lds"
+#define CONFIG_SPL_LDSCRIPT		"arch/arm/mach-omap2/am33xx/u-boot-spl.lds"
 
 #ifndef CONFIG_SPL_USBETH_SUPPORT
 #define CONFIG_FASTBOOT_FLASH_MMC_DEV   1