elfutils: Fix build on ppc/musl

musl relies on the pt_regs definitions from kernel ptrace headers

(From OE-Core rev: 7df9aa52446a031c10e84f321733a0e56f563e85)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/elfutils/elfutils_0.177.bb

@@ -31,6 +31,7 @@ SRC_URI = "https://sourceware.org/elfutils/ftp/${PV}/${BP}.tar.bz2 \
            file://debian/mips_cfi.patch \
            file://debian/0001-fix-compile-failure-with-debian-patches.patch \
            file://0001-skip-the-test-when-gcc-not-deployed.patch \
+           file://0001-ppc_initreg.c-Incliude-asm-ptrace.h-for-pt_regs-defi.patch \
            file://run-ptest \
            file://ptest.patch \
            "

meta/recipes-devtools/elfutils/files/0001-ppc_initreg.c-Incliude-asm-ptrace.h-for-pt_regs-defi.patch

@@ -0,0 +1,32 @@
+From 2e2232d0935bf8ef6e66ebffba3be68a73b5b3e5 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sun, 8 Sep 2019 15:57:59 -0700
+Subject: [PATCH] ppc_initreg.c: Incliude asm/ptrace.h for pt_regs definition
+
+Fixes
+| ../../elfutils-0.176/backends/ppc_initreg.c:79:22: error: field 'r' has incomplete type
+|       struct pt_regs r;
+|                      ^
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ backends/ppc_initreg.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/backends/ppc_initreg.c b/backends/ppc_initreg.c
+index 0e0d359..e5cca7e 100644
+--- a/backends/ppc_initreg.c
++++ b/backends/ppc_initreg.c
+@@ -33,6 +33,7 @@
+ #include <stdlib.h>
+ #if defined(__powerpc__) && defined(__linux__)
+ # include <sys/ptrace.h>
++# include <asm/ptrace.h>
+ # include <sys/user.h>
+ #endif
+ 
+-- 
+2.23.0
+