Support VA_RT_FORMAT_RGB32_10 in VAAPI frontend

In a few areas, the gallium VA-API frontend limits the pixel formats supported to a hard-coded list:

https://gitlab.freedesktop.org/mesa/mesa/-/blob/f2a4ea530078e11a98792509a5429a55aaa53879/src/gallium/frontends/va/surface.c#L1083

https://gitlab.freedesktop.org/mesa/mesa/-/blob/f2a4ea530078e11a98792509a5429a55aaa53879/src/gallium/frontends/va/config.c#L388

It would be useful to expand this list to support 10-bit-depth RGB formats (VA_RT_FORMAT_RGB32_10). One use case is in the encoding of desktop frames, as KDE for example uses this pixel format for desktop framebuffers when the display supports deep color.

I also noticed that the 10BPP-suffix formats are deprecated, so using their replacements would also be a good idea.