imx8ulp: clock: Support to enable/disable the ADC1 clock

This patch implements enable_adc1_clk() to enable or disable the ADC1
clock on i.MX8ULP.

Reviewed-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/include/asm/arch-imx8ulp/imx-regs.h b/arch/arm/include/asm/arch-imx8ulp/imx-regs.h
index af6845c..91adc85 100644
--- a/arch/arm/include/asm/arch-imx8ulp/imx-regs.h
+++ b/arch/arm/include/asm/arch-imx8ulp/imx-regs.h
@@ -30,6 +30,7 @@
 
 #define PCC_XRDC_MGR_ADDR	0x292d00bc
 
+#define PCC1_RBASE		0x28091000
 #define PCC3_RBASE		0x292d0000
 #define PCC4_RBASE		0x29800000
 #define PCC5_RBASE		0x2da70000