ALSA: pcm: Make snd_pcm_lib_malloc_pages() debug message say "allocate"

snd_pcm_lib_malloc_pages() is commonly used for allocating buffers during
the hw_params callback, whereas preallocating buffers goes through
preallocate_pcm_pages().

Having the same terminology in the failure debug messages in both
misleads developers.

Change the debug message in snd_pcm_lib_malloc_pages() to use the
term "allocate" to match its intended use.

Signed-off-by: Chen-Yu Tsai <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Takashi Iwai <[e-mail]>

sound/core/pcm_memory.c

···
 				   substream->stream,
 				   size, dmab) < 0) {
 			kfree(dmab);
-			pr_debug("ALSA pcmC%dD%d%c,%d:%s: cannot preallocate for size %zu\n",
+			pr_debug("ALSA pcmC%dD%d%c,%d:%s: cannot allocate for size %zu\n",
 				 substream->pcm->card->number, substream->pcm->device,
 				 substream->stream ? 'c' : 'p', substream->number,
 				 substream->pcm->name, size);