ANDROID: GKI: kernel: Export symbols needed by msm_minidump.ko and minidump_log.ko (again)

These symbols are used by these modules. Export them so that these
modules can be loaded.

Bug: 149258398
Tested: Booted and made sure same devices probe
Tested: Unlock the phone and play with home screen
Change-Id: Ie29c2811c07944b5a01dbc47b7a60dd56fe2aa5c
Signed-off-by: Saravana Kannan <saravanak@google.com>
(cherry picked from 6e9974ac97756b877c6858bedc216fea56fbbb38)
Signed-off-by: Mark Salyzyn <salyzyn@google.com>