oniro-image-common.inc: introduce modem/usbmodem MACHINE_FEATURES

Enable a modem/usbmodem MACHINE_FEATURE to install the needed packages
for NetworkManager and ModemManager in the image. Also enabling the MM
PACKAGECONFIG for NetworkManager to build the needed package.

Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com>

meta-oniro-core/recipes-core/images/oniro-image-common.inc

@@ -20,3 +20,15 @@ IMAGE_INSTALL:append = "\
 			"
 
 IMAGE_INSTALL:append = " ${@bb.utils.contains('MACHINE_FEATURES', 'optee', 'optee-client', '', d)} "
+
+# If the machine has a cellular modem it can set MACHINE_FEATURES+=modem to
+# enable build-in support in NetworkManager as well as ading needed packages to
+# the image.
+# In the special case of a USB cellular modem there is often the addtionial need
+# for the usb-modeswitch package to switch between mass storage and modem.
+
+PACKAGECONFIG:append:pn-networkmanager = " \
+        ${@bb.utils.contains('MACHINE_FEATURES', 'modem', ' modemmanager ', '', d)} \
+"
+IMAGE_INSTALL:append = " ${@bb.utils.contains('MACHINE_FEATURES', 'modem', 'networkmanager-wwan modemmanager', '', d)} "
+IMAGE_INSTALL:append = " ${@bb.utils.contains('MACHINE_FEATURES', 'usbmodem', 'usb-modeswitch', '', d)} "