rockchip: clk: Add rv1108 SARADC clock support

The clk_saradc is dividing from the 24M, clk_saradc=24MHz/(saradc_div_con+1).
SARADC integer divider control register is 10-bits width.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/include/dt-bindings/clock/rv1108-cru.h b/include/dt-bindings/clock/rv1108-cru.h
index d2ad3bb..7defc6b 100644
--- a/include/dt-bindings/clock/rv1108-cru.h
+++ b/include/dt-bindings/clock/rv1108-cru.h
@@ -39,6 +39,7 @@
 #define SCLK_MAC_TX			88
 #define SCLK_MACREF			89
 #define SCLK_MACREF_OUT			90
+#define SCLK_SARADC			91
 
 
 /* aclk gates */
@@ -67,6 +68,7 @@
 #define PCLK_TIMER			270
 #define PCLK_PERI			271
 #define PCLK_GMAC			272
+#define PCLK_SARADC			273
 
 /* hclk gates */
 #define HCLK_I2S0_8CH			320