audio: fmopl: drop INLINE macro

This commit expands all uses of the INLINE macro and drop it.

The reason for this is to avoid clashes with external libraries with
bad name conventions and also because renaming keywords is not a good
practice.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
(cherry picked from commit 37f6be97)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>