gcc: backport patch for gcc bug 61144

gcc: backport patch for gcc bug 61144

This fixes gcc bug 6144, which in my case exhibited itself as a kernel
module that failed to load. This was because static platform_data
structures were being corrupted with the optimiser being set to any
value other than -O0.

Originally-submitted-by: Peter Urbanec <openembedded-devel@urbanec.net>
(From OE-Core rev: 365221f7285c0e392f573deaab3b1e00b12bc293)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>