msm: sde: add rotator pixel format to v4l2 enum ioctl

Import rotator pixel formats into v4l2 enum ioctl so rotator pixel
formats will not generate kernel warning during format enumeration.

CRs-Fixed: 1054825
Change-Id: Ie739fffa2d1faed64c2bf03eac92f38fa2ab6e55
Signed-off-by: Alan Kwong <akwong@codeaurora.org>