Revert "ALSA: pcm: Fix potential data race at PCM memory allocation helpers"

This reverts commit 7e1d1456 which is
commit bd55842e upstream.

It breaks the Android abi.  If it is required in the future, it can
come back in an abi-safe way.

Bug: 161946584
Change-Id: I1ef898f3ecf95e31f03d37785cebb5d773e0f577
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>