stv0991: configure clock & pad muxing for qspi

stv0991 has cadence qspi controller for flash interfacing, this
patch configures the device pads & clock for the controller.

Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Jagannadh Teki <jteki@openedev.com>
diff --git a/arch/arm/cpu/armv7/stv0991/clock.c b/arch/arm/cpu/armv7/stv0991/clock.c
index 70b8a8d..26c0d36 100644
--- a/arch/arm/cpu/armv7/stv0991/clock.c
+++ b/arch/arm/cpu/armv7/stv0991/clock.c
@@ -33,7 +33,9 @@
 		/* Clock selection for ethernet tx_clk & rx_clk*/
 		writel((readl(&stv0991_cgu_regs->eth_ctrl) & ETH_CLK_MASK)
 				| ETH_CLK_CTRL, &stv0991_cgu_regs->eth_ctrl);
-
+		break;
+	case QSPI_CLOCK_CFG:
+		writel(QSPI_CLK_CTRL, &stv0991_cgu_regs->qspi_freq);
 		break;
 	default:
 		break;