clk: renesas: r8a7796: Add R8A77961 CPG/MSSR support

Add support for the R-Car M3-W+ (R8A77961) SoC.
R-Car M3-W+ is very similar to R-Car M3-W (R8A77960), which allows for
both SoCs to share a driver.

Based on Linux commit 2ba738d56db4 ("clk: renesas: r8a7796: Add R8A77961
CPG/MSSR support")

Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/drivers/clk/renesas/r8a7796-cpg-mssr.c b/drivers/clk/renesas/r8a7796-cpg-mssr.c
index 87b8c08..a3fee15 100644
--- a/drivers/clk/renesas/r8a7796-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a7796-cpg-mssr.c
@@ -355,11 +355,30 @@
 	.get_pll_config		= r8a7796_get_pll_config,
 };
 
+static const struct cpg_mssr_info r8a77961_cpg_mssr_info = {
+	.core_clk		= r8a7796_core_clks,
+	.core_clk_size		= ARRAY_SIZE(r8a7796_core_clks),
+	.mod_clk		= r8a7796_mod_clks,
+	.mod_clk_size		= ARRAY_SIZE(r8a7796_mod_clks),
+	.mstp_table		= r8a7796_mstp_table,
+	.mstp_table_size	= ARRAY_SIZE(r8a7796_mstp_table),
+	.reset_node		= "renesas,r8a77961-rst",
+	.extalr_node		= "extalr",
+	.mod_clk_base		= MOD_CLK_BASE,
+	.clk_extal_id		= CLK_EXTAL,
+	.clk_extalr_id		= CLK_EXTALR,
+	.get_pll_config		= r8a7796_get_pll_config,
+};
+
 static const struct udevice_id r8a7796_clk_ids[] = {
 	{
 		.compatible	= "renesas,r8a7796-cpg-mssr",
 		.data		= (ulong)&r8a7796_cpg_mssr_info,
 	},
+	{
+		.compatible	= "renesas,r8a77961-cpg-mssr",
+		.data		= (ulong)&r8a77961_cpg_mssr_info,
+	},
 	{ }
 };