qemu/x86_64: enable generic hda codec

Enable the generic hda (sound) codec, necessary for qemu audio to work.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

board/qemu/x86_64/linux-4.2.config

@@ -15,6 +15,7 @@ CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SOUND=y
 CONFIG_SND=y
 CONFIG_SND_HDA_INTEL=y
+CONFIG_SND_HDA_GENERIC=y
 CONFIG_EXT4_FS=y
 CONFIG_TMPFS=y
 CONFIG_TMPFS_POSIX_ACL=y