am43xx: Add qspi support

Add QSPI definitions and clock configuration support.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
diff --git a/arch/arm/cpu/armv7/am33xx/clock_am43xx.c b/arch/arm/cpu/armv7/am33xx/clock_am43xx.c
index 97c00b4..fb654bb 100644
--- a/arch/arm/cpu/armv7/am33xx/clock_am43xx.c
+++ b/arch/arm/cpu/armv7/am33xx/clock_am43xx.c
@@ -98,6 +98,7 @@
 		&cmper->emiffwclkctrl,
 		&cmper->emifclkctrl,
 		&cmper->otfaemifclkctrl,
+		&cmper->qspiclkctrl,
 		0
 	};