clk: renesas: r8a7796: Add CANFD clock

Based on a patch for r8a7795 by Ramesh Shanmugasundaram.
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/clk/renesas/r8a7796-cpg-mssr.c

@@ -103,6 +103,7 @@ static const struct cpg_core_clk r8a7796_core_clks[] __initconst = {
 	DEF_FIXED("cl",         R8A7796_CLK_CL,    CLK_PLL1_DIV2, 48, 1),
 	DEF_FIXED("cp",         R8A7796_CLK_CP,    CLK_EXTAL,      2, 1),
 
+	DEF_DIV6P1("canfd",     R8A7796_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
 	DEF_DIV6P1("csi0",      R8A7796_CLK_CSI0,  CLK_PLL1_DIV4, 0x00c),
 
 	DEF_DIV6_RO("osc",      R8A7796_CLK_OSC,   CLK_EXTAL, CPG_RCKCR,  8),