clk: renesas: Add support for RPCD2 clock

This supports RPCD2 clock handling. While at it, add the check point
for RPC-IF clock RPCD2 Frequency Division Ratio, since it must be odd
number

Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.h b/drivers/clk/renesas/rcar-gen3-cpg.h
index 8265c96..52526a0 100644
--- a/drivers/clk/renesas/rcar-gen3-cpg.h
+++ b/drivers/clk/renesas/rcar-gen3-cpg.h
@@ -35,6 +35,9 @@
 #define DEF_GEN3_SD(_name, _id, _parent, _offset)	\
 	DEF_BASE(_name, _id, CLK_TYPE_GEN3_SD, _parent, .offset = _offset)
 
+#define DEF_GEN3_RPCD2(_name, _id, _parent, _offset)	\
+	DEF_BASE(_name, _id, CLK_TYPE_GEN3_RPCD2, _parent, .offset = _offset)
+
 #define DEF_GEN3_MDSEL(_name, _id, _md, _parent0, _div0, _parent1, _div1) \
 	DEF_BASE(_name, _id, CLK_TYPE_GEN3_MDSEL,	\
 		 (_parent0) << 16 | (_parent1),		\