Revert "makefile: add new flag -fgcse-las - part 2"

This reverts commit 95c65e641e5ce5a4fa9a38bc54d44ceee34b361d.
Revert "makefile: add new flag -fgcse-las"

This reverts commit 7608d677969afc38c040b54677426ee799234392.
Revert "makefile: tweak and align flags"

This reverts commit 081b54f3a6e4dd97ccf7232730c0bcd1cfdcb702.
Revert "makefile: rework and restyle"

This reverts commit be6b7842dbe8e4c5c3d8bec44efb3d5ce468f056.
Revert "ARM: makefile: remove march=armv7-a for satisfy targeting MSM Krait CPUs"

This reverts commit b96a13eadba18c82ce578bb9de75353c2e28cc85.
Revert "makefile: remove Wno-sizeof-pointer-memaccess"

This reverts commit f49757d19326832fb2088153215cb060714e3212.
Revert "makefile: Added 4.8.2 optimizations"

This reverts commit 8a4c9e6bf1babd2fc622433ed0b0e1dfaa2b2808.
Add optimizations
update buildscript