Michel Dänzer authored Oct 21, 2015 and Michel Dänzer committed Mar 09, 2016

Add xf86CursorResetCursor, which allows switching between HW and SW
cursor depending on the current state.

Call it from xf86DisableUnusedFunctions, which is called after any CRTC
configuration change such as setting a mode or disabling a CRTC. This
makes sure that SW cursor is used e.g. while a transform is in use on
any CRTC or while there are active PRIME output slaves, and enables HW
cursor again once none of those conditions are true anymore.

Reviewed-by: Keith Packard <keithp@keithp.com>