Revert "defconfig: disable HTC_ONMODE_CHARGING"

This reverts commit 9b1285a0953c5176bd720259bd533f91c59d34c3.
Revert "defconfig: disable MMC_MUST_PREVENT_WP_VIOLATION"

This reverts commit a8dc0f3462e3602d9381382260209355a01bba36.