Fix build with gcc 4.8: Wno-sizeof-pointer-memaccess everywhere!

In gcc 4.8 Wsizeof-pointer-memaccess is enabled by default and mako
can't handle this.  It breaks in multipule places.  Specifically on
bluetooth and usb gadget.  It's safe to disable this flag using Wno-sizeof-pointer-memaccess

Signed-off-by:  Paul Beeler