ARM: add mach-asm9260

it is low cost (?) SoC targeted for market in China and India which
trying to compete with AT91SAM9G25.

Here is some info:
http://www.alphascale.com/index.asp?ics/615.html

One of products:
http://www.aliexpress.com/store/product/2014-hot-sales-FREE-SHIPPING-new-Purple-core-ARM9-development-board-ASM9260T-SDRAM-power-line/433637_1931495721.html

In some cases this SoC looks similar to iMX23/iMX28. But currently it makes no
sense to merge mach code of this devices. Especially because most differences
are already collected mach-mxs folder.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/Kconfig

@@ -836,6 +836,8 @@ config ARCH_VIRT
 #
 source "arch/arm/mach-mvebu/Kconfig"
 
+source "arch/arm/mach-asm9260/Kconfig"
+
 source "arch/arm/mach-at91/Kconfig"
 
 source "arch/arm/mach-axxia/Kconfig"

arch/arm/mach-asm9260/Kconfig

@@ -0,0 +1,6 @@
+config MACH_ASM9260
+	bool "Alphascale ASM9260"
+	depends on ARCH_MULTI_V5
+	select CPU_ARM926T
+	help
+	  Support for Alphascale ASM9260 based platform.