defconfig: sm8150: Disable rmnet_data driver

Since all map packet processing is handled by upstream rmnet driver,
rmnet_data driver can be safely turned off.

CRs-Fixed: 2259239
Change-Id: I4165a335a7ce41941bfd48f102d1014076c9c195
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>