svga: fix src/dst typo in can_blit_via_copy_region_vgpu10()
svga: fix src/dst typo in can_blit_via_copy_region_vgpu10()

The function was always returning false because of this typo.

Retested with piglit.  There's some sRGB-related blit failures, but
that seems unrelated.

Reviewed-by: Charmaine Lee <67ce69700661ea856134ddb10419a330e5f037d7@vmware.com>
Reviewed-by: Neha Bhende <faec1a32a2d2624ef91f92ce8eed261ff4162c00@vmware.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler