defconfig: arm: msm: Enable MSM_RMNET_BAM config on 8937

This patch enables rmnet bam driver
on msm8937 paltform. This is needed
for all data communication OTA.

Change-Id: Ida90399745ccacfdfd9568db29a1011a974741f2
Acked-by: Abhishek Chauhan <abchauha@qti.qualcomm.com>
Signed-off-by: Ravinder Konka <rkonka@codeaurora.org>