radv: allow holes in inline push constants

radv: allow holes in inline push constants

Use a dword mask instead of a range to track which push constants to
inline.

fossil-db (Sienna Cichlid):
Totals from 5724 (4.25% of 134621) affected shaders:
CodeSize: 20894044 -> 20815748 (-0.37%); split: -0.39%, +0.02%
Instrs: 4002568 -> 3988385 (-0.35%); split: -0.38%, +0.02%
Latency: 29285060 -> 29224414 (-0.21%); split: -0.22%, +0.01%
InvThroughput: 5529700 -> 5526893 (-0.05%); split: -0.05%, +0.00%
VClause: 78093 -> 78240 (+0.19%); split: -0.23%, +0.41%
SClause: 135495 -> 131027 (-3.30%); split: -3.30%, +0.00%
Copies: 330856 -> 324552 (-1.91%); split: -2.37%, +0.46%
PreSGPRs: 226031 -> 224778 (-0.55%); split: -0.61%, +0.05%

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12145>