msm: camera: Sensor sequence change in Makefile

Fix for bringing up back sensor (ov5647) first
instead of front sensor (ov7692) by default

Change-Id: I3d888453dd4df2bfd983fc7008a622a2baefe108
Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org>