alsa-plugins: Add PACKAGECONFIG for samplerate
alsa-plugins: Add PACKAGECONFIG for samplerate

:Release Notes:
libsamplerate0 is autodetected from sysroot and still included in some
images (e.g. from incremental and world builds).

:Detailed Notes:

:Testing Performed:
Only build tested.

:QA Notes:
No change to image.

:Issues Addressed:
[ANG-4934] Remove libsamplerate from the image

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@lge.com>

Change-Id: I207394c2a8d9cebac1d7f11dbd584d11c5023385
Reviewed-on: https://g2g.palm.com/5971
Reviewed-by: DCO Verification
Build: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@lge.com>
Reviewed-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@lge.com>
Tested-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Susan Montooth <be0b8b1fe2cc6a744be9b1ae6516e077aa323e09@lge.com>

openwebos/meta-webos,openwebos/meta-webos,Garfonso/meta-webos-ports,openwebos/meta-webos,nizovn/meta-webos-ports,Garfonso/meta-webos-ports,openwebos/meta-webos,nizovn/meta-webos-ports