Fix build issue due to missing dependency in linpack

Fix build issue due to missing dependency in linpack

This changeset fixes a FTBS in the linpack recipe.

tmp/work/aarch64-agl-linux/linpack/1.0-r0/temp/run.do_configure.6243: rsync: not found

Bug-AGL: SPEC-969

Change-Id: I90bb157ef21b974fea86f8dafcaa81a27c341c55
Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/11365
Reviewed-by: Stéphane Desneux <stephane.desneux@iot.bzh>
Tested-by: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-build: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-boot-test: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>