core/pkg-autotools: align host configure commands to target one

The host configure commands are not indented the same way as the target
ones. Besides, there are leading spaces (instead of TABs) on one line.

Replicate the same indentation as used for the target commands.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>