RRS: Apply the default config from persist prop

vendor_config plays as another role to control the display config during
the boot time. To change the default configuration of the user selected
mode, we use persist config to store the value.

Bug: 232721840
Test: Boot w/ and w/o user selected configs and check the resolution
Change-Id: Ideed75f0a29368ff95916fb1fa87f21482c17613
1 file changed