[9610] wlbt: don't pack mxconf on Android P.

[9610] wlbt: don't pack mxconf on Android P.

After correcting mxconf structures to fix the warning reported
by Clang, WLBT FW crashes due to disagreement of the alignment
of shared data structures between driver and FW.

I suspect that because of the "__packed struct foo" syntax used
for mxconf.h on both sides, the structures don't really get
packed at all, so correcting it on one side only doesn't work.

Change-Id: Ie1c451d009531a2fa86a3e864a02f02647341cc4
SCSC-Bug-Id: SSB-40175
Signed-off-by: Ivan Priest <i.priest@samsung.com>