drm/bridge: convert to use devm_platform_ioremap_resource()

convert to use devm_platform_ioremap_resource().

Signed-off-by: Shixiong Ou <oushixiong@kylinos.cn>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Manikandan Muralidharan <manikandan.m@microchip.com>
Reviewed-and-tested-by: Dharma Balasubiramani <dharma.b@microchip.com>
Reviewed-by: Dharma Balasubiramani <dharma.b@microchip.com>
Tested-by: Dharma Balasubiramani <dharma.b@microchip.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250206071713.180471-1-oushixiong1025@163.com