ARM: PRIMA2: adjust Kconfig to support select SoC features

Now we have primaII, but will include Marco and Polo in mach-prima2
as well. We add Kconfig menu so that we can select necessary SoC
features.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
diff --git a/arch/arm/mach-prima2/Kconfig b/arch/arm/mach-prima2/Kconfig
new file mode 100644
index 0000000..65438e1
--- /dev/null
+++ b/arch/arm/mach-prima2/Kconfig
@@ -0,0 +1,15 @@
+if ARCH_SIRF
+
+menu "CSR SiRF primaII/Marco/Polo Specific Features"
+
+config ARCH_PRIMA2
+	bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
+	default y
+	select CPU_V7
+	select ZONE_DMA
+	help
+          Support for CSR SiRFSoC ARM Cortex A9 Platform
+
+endmenu
+
+endif