Skip processing repeat EV_KEY events for keyboards

Key repeat is handled by Android internally so we should not use the
kernel level key repeat.

Android attempts to disable key repeat by sending a EVIOCSREP ioctl
call, however this does not work on all keyboards (namely any that use
the atkbd driver) as [0, 0] are considered invalid configuration values
for the driver.

This functions in a similar way to the original intention in that it
will discard all kernel level repeat EV_KEY events to allow the system
level key-repeat to function correctly.

Bug: b/374209729
Test: Manually with offending device
Flag: EXEMPT bugfix
Change-Id: I5219edcddfc2fdb420e5c3ef7ecc9b5c557e5c6a