device/*: stop using console=null

I replaced "console=null" with "quiet loglevel=2", based on the findings in #2989 (closed)

fixes #3269 (closed)

fixes #2989 (closed)

.ci/grep.sh

@@ -87,7 +87,7 @@ if grep -qEr 'PMOS_NO_OUTPUT_REDIRECT' -- *; then
 	exit_code=1
 fi
 
-if grep -qEr '^deviceinfo_kernel_cmdline.*[\"\s]console=null' -- *; then
+if grep -qEr '^deviceinfo_kernel_cmdline.*[\"\s]console=null' -- device/; then
 	echo "ERROR: Do not use console=null in the kernel command line."
 	echo "Use these params to quiet console on boot: quiet loglevel=2 udev.log_level=2"
 	echo "For more information, see: pma#2989"