sunxi: add PRCM secure switch register definition

Some new Allwinner SoCs' PRCM has a secure switch register, which
controls the access to some clock and power registers in PRCM block.

Add the definition of this register and its bits in the PRCM header
file.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Tested-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>

arch/arm/include/asm/arch-sunxi/prcm.h

@@ -196,6 +196,10 @@
 #define PRCM_CPU3_PWR_CLAMP(n) (((n) & 0xff) << 0)
 #define PRCM_CPU3_PWR_CLAMP_MASK PRCM_CPU3_PWR_CLAMP(0xff)
 
+#define PRCM_SEC_SWITCH_APB0_CLK_NONSEC (0x1 << 0)
+#define PRCM_SEC_SWITCH_PLL_CFG_NONSEC (0x1 << 1)
+#define PRCM_SEC_SWITCH_PWR_GATE_NONSEC (0x1 << 2)
+
 #ifndef __ASSEMBLY__
 #include <linux/compiler.h>
 
@@ -233,6 +237,8 @@ struct __packed sunxi_prcm_reg {
 	u32 dram_pwr;		/* 0x180 */
 	u8 res12[0xc];		/* 0x184 */
 	u32 dram_tst;		/* 0x190 */
+	u8 res13[0x3c];		/* 0x194 */
+	u32 prcm_sec_switch;	/* 0x1d0 */
 };
 
 void prcm_apb0_enable(u32 flags);