vdpau.h: improve constant expansion safety

Signed-off-by: Rémi Denis-Courmont <remid@nvidia.com>
Reviewed-by: José Hiram Soltren <jsoltren@nvidia.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
vdpau: define some more H.264/AVC decoding profiles

Signed-off-by: Rémi Denis-Courmont <remid@nvidia.com>
Reviewed-by: José Hiram Soltren <jsoltren@nvidia.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>