Enable ES1371 sound card module for VMWare guests (#3799)

VMWare has option to emulate ES1371 soundcard which supposedly works better
than the default hdaudio. Enable its driver for the OVA image.

Fixes #3778

buildroot-external/board/pc/ova/kernel.config

@@ -21,6 +21,8 @@ CONFIG_VMWARE_VMCI_VSOCKETS=m
 CONFIG_VMWARE_VMCI=y
 CONFIG_VMWARE_BALLOON=y
 CONFIG_VMWARE_PVSCSI=y
+# VMWare has optional ES1371 sound card emulation
+CONFIG_SND_ENS1371=m
 
 # These options are for LXD Guest Support
 CONFIG_NET_9P=m