Write the pullup value only if new value applied

Also, remove the non-existing paths and set the initial value of
mUsbDataEnabled.

Bug: 221009551
Test: build, boot
Signed-off-by: Jimmy Hu <hhhuuu@google.com>
Change-Id: Ia44923b13d7a6a381d0024df4e7af5ac0667f0ef
2 files changed