v3d: flag dirty state when binding compute states

v3d: flag dirty state when binding compute states

As introduced in "v3d: flag dirty state when binding new sampler states"
we need to add support for compute states. New flag VC5_DIRTY_COMPTEX and
VC5_DIRTY_UNCOMPILED_CS are introduced.

Reaching 33 flags at the dirty field forces us to change the type to
uint_64. Flags are reordered and empty continuous bits are available
for future pipeline stages.

v2: Update flag conditions to compile cs shader. (Eric Antholt)
    Now dirty flags use uint_64t and flags are reordered.
    Added VC5_DIRTY_UNCOMPILED_CS flag.

Reviewed-by: Eric Anholt <eric@anholt.net>