clk: renesas: r8a7792: Fix LB clock divider

The CLK_TYPE_GEN2_LB clock type is meant for SoCs like R-Car H2, where
the LB clock divider depends on the value of the MD18 pin.

On R-Car V2H, the LB clock divider is fixed to 24. Hence model the
clock as a fixed factor clock instead.

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Reviewed-by: Simon Horman <[e-mail]>
Reviewed-by: Fabrizio Castro <[e-mail]>

drivers/clk/renesas/r8a7792-cpg-mssr.c

···
 	DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
 
 	/* Core Clock Outputs */
-	DEF_BASE("lb",   R8A7792_CLK_LB,   CLK_TYPE_GEN2_LB,   CLK_PLL1),
 	DEF_BASE("qspi", R8A7792_CLK_QSPI, CLK_TYPE_GEN2_QSPI, CLK_PLL1_DIV2),
 
 	DEF_FIXED("z",      R8A7792_CLK_Z,     CLK_PLL0,          1, 1),
···
 	DEF_FIXED("hp",     R8A7792_CLK_HP,    CLK_PLL1,         12, 1),
 	DEF_FIXED("i",      R8A7792_CLK_I,     CLK_PLL1,          3, 1),
 	DEF_FIXED("b",      R8A7792_CLK_B,     CLK_PLL1,         12, 1),
+	DEF_FIXED("lb",     R8A7792_CLK_LB,    CLK_PLL1,         24, 1),
 	DEF_FIXED("p",      R8A7792_CLK_P,     CLK_PLL1,         24, 1),
 	DEF_FIXED("cl",     R8A7792_CLK_CL,    CLK_PLL1,         48, 1),
 	DEF_FIXED("m2",     R8A7792_CLK_M2,    CLK_PLL1,          8, 1),