hwc2: Mark Solid fill as updating iff. its color changes.

Unlike buffer layers, client doesn't set surface damage to
solid fill layers. All attributes except color are tied to
geoemtry changes. Just check for color, incase it doesnt update,
mark layer as non-updating.

CRs-Fixed: 2396411
Change-Id: Id77c467aae2ffd207bb95e2943610295dedc2a60
1 file changed