arm: add get_tls syscall from linux v4.15

for systems without tp register or kuser helper, new in linux commit
8fcd6c45f5a65621ec809b7866a3623e9a01d4ed

diff --git a/arch/arm/bits/syscall.h.in b/arch/arm/bits/syscall.h.in
index c594152e344a8af71dee5813141be4a39e2d3d32..1920516a4abe88b5c4fa288017d7b0cc0fecb251 100644 (file)
--- a/arch/arm/bits/syscall.h.in
+++ b/arch/arm/bits/syscall.h.in
@@ -359,4 +359,5 @@
 #define __ARM_NR_usr26         0x0f0003
 #define __ARM_NR_usr32         0x0f0004
 #define __ARM_NR_set_tls       0x0f0005
+#define __ARM_NR_get_tls       0x0f0006