asoc: vote for Glink Rx thread priority upgrade

For Low-latency audio playback usecase, vote for a priority
upgrade for Glink Rx thread, to avoid any performance issue.

Change-Id: I8332c80eedd7325700e695f341fc4b92f65fd77c
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>