Revert "update makefile"

This reverts commit b9138c7f069f174848072f4e53949d3e550367fc.
Revert "Kconfig: various changes"

This reverts commit 08519b2ab4265175799061c6897aa0a6fef07bd1.
Revert "Makefile: -Ofast and graphite"

This reverts commit cd0ff173f00a28cd988cd3f5e2eb56beac78f627.