FROMLIST: ARM: fix atags_to_fdt with stack-protector-strong

Building with CONFIG_CC_STACKPROTECTOR_STRONG triggers protection code
generation under CONFIG_ARM_ATAG_DTB_COMPAT but this is too early for
being able to use any of the stack_chk code. Explicitly disable it for
only the atags_to_fdt bits.

Suggested-by: zhxihu <zhxihu@marvell.com>
Signed-off-by: Kees Cook <keescook@chromium.org>

Bug: 25923642
Patchset: stack-protector-strong

(git am https://patchwork.kernel.org/patch/7888111/mbox/)
Signed-off-by: Kees Cook <keescook@chromium.org>
Change-Id: I07c62da6dc5e1b23047ce65b86c4003732868f3a
1 file changed