defconfig: msm: enable CONFIG_USB_RTL8152 for SDM845

Enable config for Realtek RTL8152/RTL8153 based USB Ethernet
Adapters for SDM845 target. This is to align them with
android base config.

Change-Id: I78be67f2ed6636ed68b016427b0d0c990a398b97
Signed-off-by: Naitik Bharadiya <bharad@codeaurora.org>