package/elfutils: fix host build

package/elfutils: fix host build

Commit 52c5c6050c5359288ca48c85024aebd169fab258 disabled debuginfod on
target but not on host resulting in the following build failure:

configure: error: dependencies not found, use --disable-libdebuginfod to disable or --enable-libdebuginfod=dummy to build a (bootstrap) dummy library.

Fixes:
 - http://autobuild.buildroot.org/results/97713c7e281313826067af559337832f22c3cb09

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>