clk: renesas: rzg2: Mark RWDT clocks as critical

Ensures RWDT remains alert throughout the boot process if enabled.

This patch applies the change to the following SoCs: r8a774a1,
r8a774b1 and r8a774c0.
Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Link: https://lore.kernel.org/r/20200616162626.27944-4-uli+renesas@fpond.euSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/clk/renesas/r8a774a1-cpg-mssr.c

@@ -237,6 +237,7 @@ static const struct mssr_mod_clk r8a774a1_mod_clks[] __initconst = {
 };
 
 static const unsigned int r8a774a1_crit_mod_clks[] __initconst = {
+	MOD_CLK_ID(402),	/* RWDT */
 	MOD_CLK_ID(408),	/* INTC-AP (GIC) */
 };
 

drivers/clk/renesas/r8a774b1-cpg-mssr.c

@@ -233,6 +233,7 @@ static const struct mssr_mod_clk r8a774b1_mod_clks[] __initconst = {
 };
 
 static const unsigned int r8a774b1_crit_mod_clks[] __initconst = {
+	MOD_CLK_ID(402),	/* RWDT */
 	MOD_CLK_ID(408),	/* INTC-AP (GIC) */
 };
 

drivers/clk/renesas/r8a774c0-cpg-mssr.c

@@ -238,6 +238,7 @@ static const struct mssr_mod_clk r8a774c0_mod_clks[] __initconst = {
 };
 
 static const unsigned int r8a774c0_crit_mod_clks[] __initconst = {
+	MOD_CLK_ID(402),	/* RWDT */
 	MOD_CLK_ID(408),	/* INTC-AP (GIC) */
 };