touchpad: make sure we compare only the last 3 events for wobble
We're left-shifting the bits but weren't comparing against the l_r_l mask
itself. So if we get a sequence of [1, 1, 0, 1] we didn't detect a wobble
because 0b1101 != 0b101 (what we're looking for).
Fix this by turning it into a right shift, that way the bits fall off
the mask automatic
al
ly
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Signed-off-by:
Peter Hutterer <peter.hutterer@who-t.net>