libmicrohttpd: upgrade to 0.9.54

libmicrohttpd: upgrade to 0.9.54

This version of libmicrohttpd includes facilities
for upgrading connections to websockets.
Adopting it in advance allows to remove a patch
specific to AGL needed by app-framework-binder.

The patch applied here is a backport from the
upstream (see https://gnunet.org/git/libmicrohttpd.git/
commit b4216c60fdb5b48f6cfec416301fc63a1167e6cd).

Change-Id: I0a00752f1fe0a3e2a5a182ce687c55037345c5f7
Signed-off-by: José Bollo <jose.bollo@iot.bzh>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/9349
ci-image-build: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
Tested-by: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-boot-test: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
Reviewed-by: Romain Forlot <romain.forlot@iot.bzh>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>