drivers/gpu/pvr/pvr_governor: add sysfs interface for current GPU freqeuncy

Signed-off-by: Paul Reioux <reioux@gmail.com>
Revert "drivers/gpu/pvr/pvr_governor: add sysfs interface for current GPU freqeuncy"

This reverts commit 3e0415f17d189e591340997d918eaec4e06b9c35.
Revert "drivers/gpu/pvr/pvr_governor: fix sysfs to show "powersave" governor"

This reverts commit 9e40e2ac1338819ba621fcec44bd466036f2d33d.
Revert "drivers/gpu/pvr/pvr_governor: add "powersave" governor as another option"

This reverts commit c341969959cc31fc6181ae330a4206252c415628.
Revert "drivers/gpu/pvr/pvr_governor: add sysfs entry to switch governor type"

This reverts commit fd844f599e8f4ee788da6b91f3a94abd1d3c696e.
Revert "drivers/gpu/pvr/pvr_governor: add a simple PVR GPU governor"

This reverts commit 976658a2ee4bd67a1574a4cb1ff7792d3545b6e1.