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/imx6_spl.h b/include/configs/imx6_spl.h
index 0662053..dce4438 100644
--- a/include/configs/imx6_spl.h
+++ b/include/configs/imx6_spl.h
@@ -25,7 +25,7 @@
  *    or 64KB
  */
 #define CONFIG_SYS_THUMB_BUILD
-#define CONFIG_SPL_LDSCRIPT	"arch/arm/cpu/armv7/omap-common/u-boot-spl.lds"
+#define CONFIG_SPL_LDSCRIPT	"arch/arm/mach-omap2/u-boot-spl.lds"
 #define CONFIG_SPL_TEXT_BASE		0x00908000
 #define CONFIG_SPL_MAX_SIZE		0x10000
 #define CONFIG_SPL_STACK		0x0091FFB8