wl1271: Fix debug prints for beacon-loss and psm-entry-fail scenarios

Remove ERROR print from psm-entry-fail scenario, instead use an INFO print.
Also, add INFO print to the beacon-loss scenario.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>