arch/arm/boot/compressed/Makefile: replace spaces with tab

Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>
Revert "ARM: compressed/head.S: work around new binutils warning"

This reverts commit 65b4bb19b5e1fc0f160730aa2990fcb20d2a9e94.

We dont need this anymore

Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>