media: remove unneeded 'fast_io' parameter in regmap_config

When using MMIO with regmap, fast_io is implied. No need to set it
again.

Signed-off-by: Wolfram Sang <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/cec/platform/stm32/stm32-cec.c

···
 	.val_bits = 32,
 	.reg_stride = sizeof(u32),
 	.max_register = 0x14,
-	.fast_io = true,
 };
 
 static int stm32_cec_probe(struct platform_device *pdev)