clk: bcm: rpi: Add support for VEC clock

Platform driver clk-bcm2835 gets an inaccurate clock for VEC (107MHz).
Export VEC clock trough clk-raspberrypi which uses the right PLL to
get an accurate 108MHz.

Signed-off-by: Dom Cobley <[e-mail]>
[iivanov: Adapted on top of v5.17-rc6]
Signed-off-by: Ivan T. Ivanov <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/bcm/clk-raspberrypi.c

···
 	RPI_FIRMWARE_EMMC2_CLK_ID,
 	RPI_FIRMWARE_M2MC_CLK_ID,
 	RPI_FIRMWARE_PIXEL_BVB_CLK_ID,
+	RPI_FIRMWARE_VEC_CLK_ID,
 	RPI_FIRMWARE_NUM_CLK_ID,
 };
 
···
 	[RPI_FIRMWARE_EMMC2_CLK_ID]	= "emmc2",
 	[RPI_FIRMWARE_M2MC_CLK_ID]	= "m2mc",
 	[RPI_FIRMWARE_PIXEL_BVB_CLK_ID]	= "pixel-bvb",
+	[RPI_FIRMWARE_VEC_CLK_ID]	= "vec",
 };
 
 #define RPI_FIRMWARE_STATE_ENABLE_BIT	BIT(0)
···
 		.export = true,
 	},
 	[RPI_FIRMWARE_PIXEL_BVB_CLK_ID] = {
+		.export = true,
+	},
+	[RPI_FIRMWARE_VEC_CLK_ID] = {
 		.export = true,
 	},
 };