systemtap: Fix headers issue with x86 and 5.13 headers

On some x86 platforms there were header issues causing pt_regs compile
failures for our stap tests, e.g. on genericx86-64 but not qemux86-64.

Backport a patch from upstream which fixes the issue.

[YOCTO #14491]

(From OE-Core rev: a4ad6c88b683b7310ef46d89b1add80b0f41bf2d)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/systemtap/systemtap/ef5a8b9eda402e4e96c4e3ce01e7ff95d3e10470.patch

@@ -0,0 +1,26 @@
+From ef5a8b9eda402e4e96c4e3ce01e7ff95d3e10470 Mon Sep 17 00:00:00 2001
+From: Du Zhe <duzhe0211+sourceware@gmail.com>
+Date: Tue, 13 Jul 2021 19:11:55 -0400
+Subject: [PATCH] runtime: fix unintended compile error with
+ autoconf-x86-uniregs.c
+
+Adding a #include <linux/sched.h> restores this test on the gentoo
+linux-5.10.47-gentoo kernel.
+
+Upstream-Status: Backport
+---
+ runtime/linux/autoconf-x86-uniregs.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/runtime/linux/autoconf-x86-uniregs.c b/runtime/linux/autoconf-x86-uniregs.c
+index 25729c220..232c18670 100644
+--- a/runtime/linux/autoconf-x86-uniregs.c
++++ b/runtime/linux/autoconf-x86-uniregs.c
+@@ -1,3 +1,4 @@
++#include <linux/sched.h>
+ #include <asm/ptrace.h>
+ 
+ #if defined (__i386__) || defined (__x86_64__)
+-- 
+2.27.0
+

meta/recipes-kernel/systemtap/systemtap_git.inc

@@ -7,6 +7,7 @@ SRC_URI = "git://sourceware.org/git/systemtap.git \
            file://0001-Do-not-let-configure-write-a-python-location-into-th.patch \
            file://0001-Install-python-modules-to-correct-library-dir.patch \
            file://0001-staprun-stapbpf-don-t-support-installing-a-non-root.patch \
+           file://ef5a8b9eda402e4e96c4e3ce01e7ff95d3e10470.patch \
            "
 
 COMPATIBLE_HOST = '(x86_64|i.86|powerpc|arm|aarch64|microblazeel|mips).*-linux'