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/bur_am335x_common.h b/include/configs/bur_am335x_common.h
index e425cb9..9069861 100644
--- a/include/configs/bur_am335x_common.h
+++ b/include/configs/bur_am335x_common.h
@@ -113,6 +113,6 @@
 
 /* General parts of the framework, required. */
 #define CONFIG_SPL_BOARD_INIT
-#define CONFIG_SPL_LDSCRIPT		"$(CPUDIR)/am33xx/u-boot-spl.lds"
+#define CONFIG_SPL_LDSCRIPT		"arch/arm/mach-omap2/am33xx/u-boot-spl.lds"
 
 #endif	/* ! __BUR_AM335X_COMMON_H__ */