drm: imx: imx-hdmi: return defer if can't get ddc i2c adapter
drm: imx: imx-hdmi: return defer if can't get ddc i2c adapter

drm driver may probe before the i2c bus, so the driver should
defer probing until it is available

Signed-off-by: Andy Yan <e221fa0f69d5d7c8c6bc037e0b9e81576256836f@rock-chips.com>
Reviewed-by: Daniel Kurtz <31914e832df1cd8e5daa417106c0c6f5297b27d7@chromium.org>
Tested-by: Russell King <f6aa0246ff943bfa8602cdf60d40c481b38ed232@arm.linux.org.uk>
Acked-by: Russell King <f6aa0246ff943bfa8602cdf60d40c481b38ed232@arm.linux.org.uk>
Signed-off-by: Philipp Zabel <db7328bbf81a38b011e8d0f5302fd54c788d0608@pengutronix.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs