powerpc: add PTRACE_SYSEMU from linux v4.20

added in linux commit 5521eb4bca2db733952f068c37bdf3cd656ad23c

arch/powerpc/bits/ptrace.h

@@ -8,6 +8,8 @@
 #define PTRACE_SET_DEBUGREG	0x1a
 #define PTRACE_GETVSRREGS	0x1b
 #define PTRACE_SETVSRREGS	0x1c
+#define PTRACE_SYSEMU		0x1d
+#define PTRACE_SYSEMU_SINGLESTEP	0x1e
 #define PTRACE_SINGLEBLOCK	0x100
 
 #define PT_GETVRREGS PTRACE_GETVRREGS

arch/powerpc64/bits/ptrace.h

@@ -8,6 +8,8 @@
 #define PTRACE_SET_DEBUGREG	0x1a
 #define PTRACE_GETVSRREGS	0x1b
 #define PTRACE_SETVSRREGS	0x1c
+#define PTRACE_SYSEMU		0x1d
+#define PTRACE_SYSEMU_SINGLESTEP	0x1e
 #define PTRACE_SINGLEBLOCK	0x100
 
 #define PT_GETVRREGS PTRACE_GETVRREGS