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/Kconfig b/arch/arm/Kconfig
index 7a64b66..6881f36 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -341,6 +341,10 @@
 	bool "Support spear600"
 	select CPU_ARM926EJS
 
+config TARGET_STV0991
+	bool "Support stv0991"
+	select CPU_V7
+
 config TARGET_X600
 	bool "Support x600"
 	select CPU_ARM926EJS
@@ -953,6 +957,7 @@
 source "board/spear/x600/Kconfig"
 source "board/st-ericsson/snowball/Kconfig"
 source "board/st-ericsson/u8500/Kconfig"
+source "board/st/stv0991/Kconfig"
 source "board/sunxi/Kconfig"
 source "board/syteco/jadecpu/Kconfig"
 source "board/syteco/zmx25/Kconfig"