Update to v4.15 kernel headers.

Test: Compiles, boots bullhead/hikey960.
Change-Id: I118beb8b6cac0881b1270f9bf6981959297a41a8
diff --git a/libc/kernel/uapi/asm-arm/asm/ptrace.h b/libc/kernel/uapi/asm-arm/asm/ptrace.h
index dcc3826..b0291dc 100644
--- a/libc/kernel/uapi/asm-arm/asm/ptrace.h
+++ b/libc/kernel/uapi/asm-arm/asm/ptrace.h
@@ -34,6 +34,9 @@
 #define PTRACE_SETVFPREGS 28
 #define PTRACE_GETHBPREGS 29
 #define PTRACE_SETHBPREGS 30
+#define PTRACE_GETFDPIC 31
+#define PTRACE_GETFDPIC_EXEC 0
+#define PTRACE_GETFDPIC_INTERP 1
 #define USR26_MODE 0x00000000
 #define FIQ26_MODE 0x00000001
 #define IRQ26_MODE 0x00000002
@@ -42,6 +45,7 @@
 #define SVC_MODE 0x00000013
 #define FIQ_MODE 0x00000011
 #define IRQ_MODE 0x00000012
+#define MON_MODE 0x00000016
 #define ABT_MODE 0x00000017
 #define HYP_MODE 0x0000001a
 #define UND_MODE 0x0000001b