mt6765-common: Use stop instead of setprop for console

- Using setprop generates a denial https://katb.in/kat633

, relabeling the prop and allowing vendor_init to set it doesn't work.

Signed-off-by: SahilSonar <sss.sonar2003@gmail.com>
Change-Id: Idf2285c985eb3604cecd8130716873b216b0d06b