[source] devel/strace: fix build on mpc85xx target

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/519a199cbcc0930e229ddd7087309326a846bdce

commit 519a199cbcc0930e229ddd7087309326a846bdce
Author: Alexandru Ardelean <ardeleanalex at gmail.com>
AuthorDate: Fri Nov 4 17:59:08 2016 +0200

    devel/strace: fix build on mpc85xx target
    
    builbot faillog:
    https://downloads.lede-project.org/snapshots/faillogs/powerpc_8540/base/strace/compile.txt
    
    Seems that for PPC, the <linux/ptrace.h> header [from uapi] collides
    with musl's <sys/user.h>, for the pt_regs struct.
    
    Seems I tried to upstream this patch a while back:
    https://lists.openwrt.org/pipermail/openwrt-devel/2016-April/041093.html
    
    It seems to work on current LEDE trunk too.
    
    Signed-off-by: Alexandru Ardelean <ardeleanalex at gmail.com>
---
 .../patches/100-workaround--pt-reg-collisions-ppc.patch    | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/package/devel/strace/patches/100-workaround--pt-reg-collisions-ppc.patch b/package/devel/strace/patches/100-workaround--pt-reg-collisions-ppc.patch
new file mode 100644
index 0000000..9b9d12a
--- /dev/null
+++ b/package/devel/strace/patches/100-workaround--pt-reg-collisions-ppc.patch
@@ -0,0 +1,14 @@
+--- a/ptrace.h
++++ b/ptrace.h
+@@ -52,7 +52,10 @@ extern long ptrace(int, int, char *, long);
+ # define ptrace_peeksiginfo_args XXX_ptrace_peeksiginfo_args
+ #endif
+ 
++#include <linux/types.h>
++#define __ASSEMBLY__
+ #include <linux/ptrace.h>
++#undef __ASSEMBLY__
+ 
+ #ifdef HAVE_STRUCT_IA64_FPREG
+ # undef ia64_fpreg
+--