Hexagon: check to if we will overflow the signal stack
Hexagon: check to if we will overflow the signal stack

Signed-off-by: Richard Kuo <5c405e4535fa35126dd73e0f658fb1523e5f9f8e@codeaurora.org>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs