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/stv0991/clock.c b/arch/arm/cpu/armv7/stv0991/clock.c
new file mode 100644
index 0000000..aca6aba
--- /dev/null
+++ b/arch/arm/cpu/armv7/stv0991/clock.c
@@ -0,0 +1,27 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/stv0991_cgu.h>
+#include<asm/arch/stv0991_periph.h>
+
+static struct stv0991_cgu_regs *const stv0991_cgu_regs = \
+				(struct stv0991_cgu_regs *) (CGU_BASE_ADDR);
+
+void clock_setup(int peripheral)
+{
+	switch (peripheral) {
+	case UART_CLOCK_CFG:
+		writel(UART_CLK_CFG, &stv0991_cgu_regs->uart_freq);
+		break;
+	case ETH_CLOCK_CFG:
+		break;
+	default:
+		break;
+	}
+}