The stack-overflow check when building the "grep" debian package fails
on the debian hppa target. Reason is, that the guard page at the top
of the stack (which is added by qemu) prevents the fault handler in the
grep program to properly detect the stack overflow.

The Linux kernel on a physical machine doesn't install a guard page
either, so drop it and as such fix the build of "grep".

Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20220924114501.21767-5-deller@gmx.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>