package/petitboot: Update to 2e05b1dd0490ce7ecdd15f522e6c700bc6522062

Adds translations, improves GRUB & PXE parsing support and in-band IPMI
configuration.

Because we're using gettext, we need an autopoint run as part of the
autoreconf step. However, buildroot doesn't supply an autopoint, so we
add those missing files in a patch to petitboot.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>