Fix definition of Bayer phase to match DNG SDK

Note that the Adobe DNG 1.4 spec for Bayer phase (defined for the
FixBadPixelsConstant and FixBadPixelsList opcodes) is incorrect. It's
inconsistent with the DNG SDK (cf. dng_negative::SetBayerMosaic and
dng_opcode_FixBadPixelsList::IsGreen), and Adobe confirms that the
spec should be updated to match the SDK.

Test: build
Bug: 78294972
Change-Id: Ie60fb3370b80ed30c8c05505dcfdc873746e244a