[systemd] Allow passing optional adaptation args for usb-moded. JB#34547

Systemd environment files can't be used to accumulate values and the
existing $USB_MODED_ARGS is already used for the purposes of optional
rescue mode.

Use separate $USB_MODED_HW_ADAPTATION_ARGS to allow passing hw adaptation
specific command line options to usb-moded.

Additionally remove the '-a' argument from default command line parameters
as it can now be handled in adaptation config only for those devices that
actually need it.

Signed-off-by: Simo Piiroinen <simo.piiroinen@jollamobile.com>

systemd/usb-moded.service

@@ -11,7 +11,7 @@ Type=notify
 TimeoutSec=15
 EnvironmentFile=-/var/lib/environment/usb-moded/*.conf
 EnvironmentFile=-/run/usb-moded/*.conf
-ExecStart=/usr/sbin/usb_moded --systemd -a --force-syslog $USB_MODED_ARGS
+ExecStart=/usr/sbin/usb_moded --systemd --force-syslog $USB_MODED_ARGS $USB_MODED_HW_ADAPTATION_ARGS
 Restart=always
 ExecReload=/bin/kill -HUP $MAINPID
 BusName=com.meego.usb_moded