ASoC: pxa: avoid AC97_BUS build warning

Selecting AC97_BUS_NEW from SND_PXA2XX_SOC_AC97 leads to a Kconfig
warning if any other driver selects AC97_BUS:

WARNING: unmet direct dependencies detected for AC97_BUS_COMPAT
  Depends on [n]: SOUND [=y] && !UML && SND [=y] && AC97_BUS_NEW [=y] && !AC97_BUS [=y]
  Selected by [y]:
  - SND_SOC_WM9713 [=y] && SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && AC97_BUS_NEW [=y]

I don't know if that combination is supposed to work.
Assuming it is not, this adds a dependency on all users
for PXA to avoids the combination.

Fixes: 1c8bc7b3 ("ASoC: pxa: switch to new ac97 bus support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/pxa/Kconfig

@@ -79,6 +79,7 @@ config SND_PXA2XX_SOC_TOSA
 	tristate "SoC AC97 Audio support for Tosa"
 	depends on SND_PXA2XX_SOC && MACH_TOSA
 	depends on MFD_TC6393XB
+	depends on !AC97_BUS
 	select SND_PXA2XX_SOC_AC97
 	select SND_SOC_WM9712
 	help
@@ -88,6 +89,7 @@ config SND_PXA2XX_SOC_TOSA
 config SND_PXA2XX_SOC_E740
 	tristate "SoC AC97 Audio support for e740"
 	depends on SND_PXA2XX_SOC && MACH_E740
+	depends on !AC97_BUS
 	select SND_SOC_WM9705
 	select SND_PXA2XX_SOC_AC97
 	help
@@ -97,6 +99,7 @@ config SND_PXA2XX_SOC_E740
 config SND_PXA2XX_SOC_E750
 	tristate "SoC AC97 Audio support for e750"
 	depends on SND_PXA2XX_SOC && MACH_E750
+	depends on !AC97_BUS
 	select SND_SOC_WM9705
 	select SND_PXA2XX_SOC_AC97
 	help
@@ -106,6 +109,7 @@ config SND_PXA2XX_SOC_E750
 config SND_PXA2XX_SOC_E800
 	tristate "SoC AC97 Audio support for e800"
 	depends on SND_PXA2XX_SOC && MACH_E800
+	depends on !AC97_BUS
 	select SND_SOC_WM9712
 	select SND_PXA2XX_SOC_AC97
 	help
@@ -116,6 +120,7 @@ config SND_PXA2XX_SOC_EM_X270
 	tristate "SoC Audio support for CompuLab EM-x270, eXeda and CM-X300"
 	depends on SND_PXA2XX_SOC && (MACH_EM_X270 || MACH_EXEDA || \
 			MACH_CM_X300)
+	depends on !AC97_BUS
 	select SND_PXA2XX_SOC_AC97
 	select SND_SOC_WM9712
 	help
@@ -126,6 +131,7 @@ config SND_PXA2XX_SOC_PALM27X
 	bool "SoC Audio support for Palm T|X, T5, E2 and LifeDrive"
 	depends on SND_PXA2XX_SOC && (MACH_PALMLD || MACH_PALMTX || \
 			MACH_PALMT5 || MACH_PALMTE2)
+	depends on !AC97_BUS
 	select SND_PXA2XX_SOC_AC97
 	select SND_SOC_WM9712
 	help
@@ -155,6 +161,7 @@ config SND_SOC_TTC_DKB
 config SND_SOC_ZYLONITE
 	tristate "SoC Audio support for Marvell Zylonite"
 	depends on SND_PXA2XX_SOC && MACH_ZYLONITE
+	depends on !AC97_BUS
 	select SND_PXA2XX_SOC_AC97
 	select SND_PXA_SOC_SSP
 	select SND_SOC_WM9713
@@ -194,6 +201,7 @@ config SND_PXA2XX_SOC_MAGICIAN
 config SND_PXA2XX_SOC_MIOA701
         tristate "SoC Audio support for MIO A701"
         depends on SND_PXA2XX_SOC && MACH_MIOA701
+	depends on !AC97_BUS
         select SND_PXA2XX_SOC_AC97
         select SND_SOC_WM9713
         help