udev: remove default ID_MM_PLATFORM_DRIVER_PROBE whitelist

The whitelist made all platform TTYs managed by the 'atmel_usart'
kernel driver probed by ModemManager, which isn't something we want,
as most of these aren't broadband modems.

We leave the logic supporting the ID_MM_PLATFORM_DRIVER_PROBE udev tag
as there may be a case where the user does need ModemManager to probe
a given platform TTY.

src/77-mm-platform-serial-whitelist.rules

@@ -1,13 +0,0 @@
-# do not edit this file, it will be overwritten on update
-
-ACTION!="add|change|move", GOTO="mm_platform_device_whitelist_end"
-SUBSYSTEM!="platform", GOTO="mm_platform_device_whitelist_end"
-
-# Be careful here since many devices connected to platform drivers on PCs
-# are legacy devices that won't like probing.  But often on embedded
-# systems serial ports are provided by platform devices.
-
-# Allow atmel_usart
-DRIVERS=="atmel_usart", ENV{ID_MM_PLATFORM_DRIVER_PROBE}="1"
-
-LABEL="mm_platform_device_whitelist_end"

src/Makefile.am

@@ -54,7 +54,6 @@ udevrulesdir = $(UDEV_BASE_DIR)/rules.d
 udevrules_DATA = \
 	77-mm-usb-device-blacklist.rules \
 	77-mm-pcmcia-device-blacklist.rules \
-	77-mm-platform-serial-whitelist.rules \
 	77-mm-usb-serial-adapters-greylist.rules \
 	80-mm-candidate.rules \
 	$(NULL)