adbremount: Add root helper for remount
adbremount: Add root helper for remount

Change-Id: Iae58085978c5c73cb184ec52f1715649ab382cbd
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools