aoc: Add sysfs node for AoC UDFPS clock compensation

Bug: 183908998
Test: "echo [0:osc/1:disp] > /sys/devices/platform/19000000.aoc/control/udfps_set_clock_source
Test: cat /sys/devices/platform/19000000.aoc/control/udfps_get_osc_freq
Test: cat /sys/devices/platform/19000000.aoc/control/udfps_get_disp_freq
Change-Id: I3d3341cee7feac062280bdefe4ee2a83df82d0d7
Signed-off-by: leohsieh <leohsieh@google.com>
1 file changed