stv0991: Add basic stv0991 architecture support

stv0991 architecture support added. It contains the support for
following blocks
- Timer
- uart

Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
[trini: Add arch/arm/cpu/armv7/Makefile hunk]
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile
index e419716..409e6f5 100644
--- a/arch/arm/cpu/armv7/Makefile
+++ b/arch/arm/cpu/armv7/Makefile
@@ -56,6 +56,7 @@
 obj-$(CONFIG_RMOBILE) += rmobile/
 obj-$(CONFIG_ARCH_S5PC1XX) += s5pc1xx/
 obj-$(CONFIG_SOCFPGA) += socfpga/
+obj-$(if $(filter stv0991,$(SOC)),y) += stv0991/
 obj-$(CONFIG_ARCH_SUNXI) += sunxi/
 obj-$(CONFIG_TEGRA20) += tegra20/
 obj-$(CONFIG_U8500) += u8500/