i965: Account for view parameters in fast depth clears

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
i965: Enable ARB_texture_view on Gen7+

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
docs: Mark off ARB_texture_view and add to release notes for 10.2.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>