Revert "Kernel_Build flags - GCC 4.8"

This reverts commit 6be07be5a0be11a305c5836a04eb085160010ca2.
Fix compile with gcc 4.8/4.9

Change-Id: I4e7137009e18541b3fc236fbce273abbc4a6de69
Revert "Fix compile with gcc 4.8/4.9"

This reverts commit 221bdfc551cbe0cf5e7403d3de7852e0b2668dbf.