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/arch/arm/Kconfig b/arch/arm/Kconfig
index 3082451..acd689b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -544,8 +544,7 @@
 
 config TARGET_CM_T43
 	bool "Support cm_t43"
-	select CPU_V7
-	select SUPPORT_SPL
+	select ARCH_OMAP2
 
 config ARCH_SUNXI
 	bool "Support sunxi (Allwinner) SoCs"
@@ -891,7 +890,7 @@
 
 source "arch/arm/cpu/armv7/mx5/Kconfig"
 
-source "arch/arm/cpu/armv7/omap-common/Kconfig"
+source "arch/arm/mach-omap2/Kconfig"
 
 source "arch/arm/cpu/armv8/fsl-layerscape/Kconfig"