Using https://gitlab.freedesktop.org/mobile-broadband/ModemManager.git to download the source code.
Added compile option to compile qrtr support.
Enabled lto and additional gcc flags for perfomance and less size.
Modified to use meson as upstream has abandoned autotools.
Removed BUILD_PARALLEL options. These are default with ninja/meson.

Signed-off-by: Maxim Anisimov <maxim.anisimov.ua@gmail.com>
(cherry picked from commit 6ae8b15d68)

Added signal refresh rate option
modemmanager: update readme.md
Added description for added proto options.

Added compile option to compile --with-at-command-via-dbus for allowing
AT commands to modem without --debug flag

 Changes to be committed:
	modified:   net/modemmanager/Config.in
	modified:   net/modemmanager/Makefile
	modified:   net/modemmanager/files/modemmanager.init
	modified:   net/modemmanager/files/modemmanager.proto
	modified:   README.md

Signed-off-by: Valtteri Holopainen <valtsu@gmail.com>

MBIM and QMI support (necessary for modern and
high-performance LTE modems) should be default
y otherwise the only way to use modemmanager
with these protocols is to recompile the package.
This is very inconvenient for most end users.

Also fix typo in PKG_HASH definition.

Signed-off-by: Alberto Bursi <alberto.bursi@outlook.it>

Signed-off-by: Nicholas Smith <nicholas.smith@telcoantennas.com.au>