Since the build of PCM timer may be disabled via Kconfig now, each
driver that provides a timer interface needs to set CONFIG_SND_TIMER
explicitly. Otherwise it may get a build error due to missing
symbol.
Fixes: 90bbaf66ee ('ALSA: timer: add config item to export PCM timer disabling for expert')
Reported-by: kbuild test robot <[email protected]>
Cc: <[email protected]> # v4.4+
Signed-off-by: Takashi Iwai <[email protected]>
61595dca74