ofono: upgrade 2.4 -> 2.7

ofono: upgrade 2.4 -> 2.7

Remove 0001-mbim-add-an-optional-TEMP_FAILURE_RETRY-macro-copy.patch as
TEMP_FAILURE_RETRY usage has been removed in upstream commit 765c6655
("treewide: Use L_TFR macro").

Remove 0002-mbim-Fix-build-with-ell-0.39-by-restoring-unlikely-m.patch
as likely()/unlikely() has been removed in upstream commit dbbbebf9
("mbimmodem: Remove usage of likely and unlikely").

Remove the do_configure:prepend() that purges the bundled ell directory,
as it isn't needed when passing --enable-external-ell in EXTRA_OECONF.

Signed-off-by: Martin Hundebøll <martin@geanix.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>