touchscreen: Increase report rate to 25fps
The touchscreen repeat interval effectively controls the report
rate of the touchscreen to the action code. Touch interactions
are smoother with a faster refresh rate, but the CPU needs to be
fast enough to keep up, or we risk queue overflows.
25fps is the minimum required to appear smooth, and probably all
targets will be able to handle the extra CPU load.
Change-Id: I96dcc80ea2ce8b915ff5682360c2e719b835388d
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