u_format fixes
- Fix
util_format_srgb/linear
to work with ETC2 formats - Fix
util_format_is_float
to return true forR11G11B10_FLOAT
/R9G9B9E5_FLOAT
formats
util_format_srgb/linear
to work with ETC2 formatsutil_format_is_float
to return true for R11G11B10_FLOAT
/R9G9B9E5_FLOAT
formats