Commit 
d767d3ce5c48b ("ASoC: pxa: provide PCM ops for ssp, i2s and ac97
components") created a build-time dependency to SND_PXA2XX_LIB but
missed to reflect that in Kconfig.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
 config SND_PXA2XX_SOC_AC97
        tristate
        select AC97_BUS
+       select SND_PXA2XX_LIB
        select SND_PXA2XX_LIB_AC97
        select SND_SOC_AC97_BUS
 
 config SND_PXA2XX_SOC_I2S
+       select SND_PXA2XX_LIB
        tristate
 
 config SND_PXA_SOC_SSP
        tristate "Soc Audio via PXA2xx/PXA3xx SSP ports"
        select PXA_SSP
+       select SND_PXA2XX_LIB
 
 config SND_MMP_SOC_SSPA
        tristate