Handle snd_pcm_lib_mmap_vmalloc removal in 4.19

Upstream-Status: Pending

Signed-off-by: Scott Murray <scott.murray@konsulko.com>

diff --git a/driver/aim-sound/sound.c b/driver/aim-sound/sound.c
index 6a290ff..4b3329b 100644
--- a/aim-sound/sound.c
+++ b/aim-sound/sound.c
@@ -463,7 +463,6 @@ static const struct snd_pcm_ops pcm_ops = {
 	.trigger    = pcm_trigger,
 	.pointer    = pcm_pointer,
 	.page       = snd_pcm_lib_get_vmalloc_page,
-	.mmap       = snd_pcm_lib_mmap_vmalloc,
 };
 
 static int split_arg_list(char *buf, char **card_name, u16 *ch_num,