usb: gadget: u_audio: fix pcm/card naming in g_audio_setup()

Fix below smatch (v0.5.0-4443-g69e9094e11c1) warnings:
drivers/usb/gadget/function/u_audio.c:607 g_audio_setup() warn: strcpy() 'pcm_name' of unknown size might be too large for 'pcm->name'
drivers/usb/gadget/function/u_audio.c:614 g_audio_setup() warn: strcpy() 'card_name' of unknown size might be too large for 'card->driver'
drivers/usb/gadget/function/u_audio.c:615 g_audio_setup() warn: strcpy() 'card_name' of unknown size might be too large for 'card->shortname'

Below commits performed a similar 's/strcpy/strlcpy/' rework:
* v2.6.31 commit 8372d498 ("ALSA: ctxfi - Fix PCM device naming")
* v4.14 commit 003d3e70dbeb ("ALSA: ad1848: fix format string overflow warning")
* v4.14 commit 6d8b04de87e1 ("ALSA: cs423x: fix format string overflow warning")

Change-Id: Iac2273d900d4e39b7ad208e53b178cf1f4dbd745
Fixes: eb9fecb9e69b ("usb: gadget: f_uac2: split out audio core")
Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Git-commit: dfa042fa310caa475667b8c38d852f14439e0b01
Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git


Signed-off-by: Ajay Agarwal <ajaya@codeaurora.org>