ALSA: x86: hdmi: select CONFIG_SND_PCM

The newly added driver uses the PCM helpers and fails to link if they are disabled:

sound/built-in.o: In function `hdmi_lpe_audio_runtime_suspend':
intel_hdmi_audio.c:(.text+0x15906): undefined reference to `snd_pcm_suspend'
sound/built-in.o: In function `had_pcm_hw_params':
intel_hdmi_audio.c:(.text+0x15ac7): undefined reference to `snd_pcm_lib_malloc_pages'
sound/built-in.o: In function `had_pcm_open':
intel_hdmi_audio.c:(.text+0x15d49): undefined reference to `snd_pcm_hw_constraint_integer'

This uses a Kconfig 'select' statement to make sure they are enabled.

Fixes: 5dab11d89777 ("ALSA: x86: hdmi: Add audio support for BYT and CHT")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/sound/x86/Kconfig b/sound/x86/Kconfig
index 30d066e4885e..84c8f8fc597c 100644
--- a/sound/x86/Kconfig
+++ b/sound/x86/Kconfig
@@ -9,6 +9,7 @@ if SND_X86
 config HDMI_LPE_AUDIO
         tristate "HDMI audio without HDaudio on Intel Atom platforms"
         depends on DRM_I915
+        select SND_PCM
         help
          Choose this option to support HDMI LPE Audio mode