clk: renesas: r8a779a0: Use defines for PLL control registers

Add symbolic definitions for the various PLL control registers.
Replace hardcoded register offsets by the new definitions.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/8cac464c7dfb15ecd299b8ab4ba88a16135f8123.1721648548.git.geert+renesas@glider.be

Author: geertu

drivers/clk/renesas/r8a779a0-cpg-mssr.c

@@ -61,6 +61,11 @@ enum clk_ids {
 	DEF_BASE(_name, _id, CLK_TYPE_GEN4_PLL2X_3X, CLK_MAIN, \
 		 .offset = _offset)
 
+#define CPG_PLL20CR	0x0834	/* PLL20 Control Register */
+#define CPG_PLL21CR	0x0838	/* PLL21 Control Register */
+#define CPG_PLL30CR	0x083c	/* PLL30 Control Register */
+#define CPG_PLL31CR	0x0840	/* PLL31 Control Register */
+
 static const struct cpg_core_clk r8a779a0_core_clks[] __initconst = {
 	/* External Clock Inputs */
 	DEF_INPUT("extal",  CLK_EXTAL),
@@ -70,10 +75,10 @@ static const struct cpg_core_clk r8a779a0_core_clks[] __initconst = {
 	DEF_BASE(".main", CLK_MAIN,	CLK_TYPE_GEN4_MAIN, CLK_EXTAL),
 	DEF_BASE(".pll1", CLK_PLL1,	CLK_TYPE_GEN4_PLL1, CLK_MAIN),
 	DEF_BASE(".pll5", CLK_PLL5,	CLK_TYPE_GEN4_PLL5, CLK_MAIN),
-	DEF_PLL(".pll20", CLK_PLL20,	0x0834),
-	DEF_PLL(".pll21", CLK_PLL21,	0x0838),
-	DEF_PLL(".pll30", CLK_PLL30,	0x083c),
-	DEF_PLL(".pll31", CLK_PLL31,	0x0840),
+	DEF_PLL(".pll20", CLK_PLL20,	CPG_PLL20CR),
+	DEF_PLL(".pll21", CLK_PLL21,	CPG_PLL21CR),
+	DEF_PLL(".pll30", CLK_PLL30,	CPG_PLL30CR),
+	DEF_PLL(".pll31", CLK_PLL31,	CPG_PLL31CR),
 
 	DEF_FIXED(".pll1_div2",		CLK_PLL1_DIV2,	CLK_PLL1,	2, 1),
 	DEF_FIXED(".pll20_div2",	CLK_PLL20_DIV2,	CLK_PLL20,	2, 1),