stm32f7: enable instruction & data cache

It also enables commands for cache enable/disable/status.

Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
cc: Christophe KERELLO <christophe.kerello@st.com>
diff --git a/arch/arm/mach-stm32/stm32f7/soc.c b/arch/arm/mach-stm32/stm32f7/soc.c
index 06af631..6f9704a 100644
--- a/arch/arm/mach-stm32/stm32f7/soc.c
+++ b/arch/arm/mach-stm32/stm32f7/soc.c
@@ -58,6 +58,8 @@
 		 (V7M_MPU_RASR_XN_ENABLE
 			 | V7M_MPU_RASR_AP_RW_RW
 			 | 0x01 << V7M_MPU_RASR_TEX_SHIFT
+			 | 0x01 << V7M_MPU_RASR_B_SHIFT
+			 | 0x01 << V7M_MPU_RASR_C_SHIFT
 			 | V7M_MPU_RASR_SIZE_8MB
 			 | V7M_MPU_RASR_EN)
 			 , &V7M_MPU->rasr