board: dragonboard410c: Fix counter frequency

board: dragonboard410c: Fix counter frequency

The actual counter frequency is 19.2 MHz, not 19.0 MHz. This isn't really
used so far though, since probably no one (except me) ever tried using
U-Boot in EL3 where we need to program the counter frequency.

Signed-off-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by:
Link: https://lore.kernel.org/r/20250407-db410c-fixes-v1-8-524aefbc8bb4@linaro.org
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>