device/device-<msm8916-mainline>: minor cleanup and fixes

- Cleanup kernel cmdline:
  - earlycon can automatically detect the memory address of
    the UART controller based on the device tree
  - the comma before n8 in console=ttyMSM0,115200,n8 is actually
    invalid so this was not parsed correctly. However, it is the
    default anyway so we might as well remove it completely

- Configure deviceinfo_getty for all devices

- Workaround probe issue of display by adding a softdep on the panel
  module. This allows the display to work when excluding proprietary
  firmware (just a weird side effect, see comment in modprobe.conf...)
Status Job ID Name Coverage
  First
passed #499176395
aport-lint

00:00:34

passed #499176394
aports-static

00:00:30

passed #499176396
kernel-kconfig

00:00:27

passed #499176397
mr-settings

00:00:25

passed #499176393
shellcheck

00:00:29

passed #499176392
wiki

00:00:31

 
  Second
passed #499176398
aports-build

00:07:09