mdadm: update 4.3 -> 4.4

mdadm: update 4.3 -> 4.4

This update has been tested with glibc/musl and gcc/clang in all four
combinations.

Drop patches:
0001-Use-CC-to-check-for-implicit-fallthrough-warning-sup.patch
0001-fix-gcc-8-format-truncation-warning.patch
0001-util.c-add-limits.h-include-for-NAME_MAX-definition.patch
mdadm-3.3.2_x32_abi_time_t.patch
(issue fixed upstream)

0001-include-libgen.h-for-basename-API.patch
0001-mdadm.h-Undefine-dprintf-before-redefining.patch
(issue no longer occurs)

0001-mdadm-add-option-y-for-use-syslog-to-recive-event-re.patch
(service file significantly rewritten, the need for the tweak
should be reassessed)

debian-no-Werror.patch
(replaced with setting CWFLAGS to an empty string in the recipe;
we already set correct flags via CC/CFLAGS, and upstream's only
get in the way)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>