runtime: define PanicBounds in funcdata.h

The comment in funcdata.h says that the constants must agree
with those in internal/abi/symtab.go. Make that so.

Change-Id: Ib64146bfb31fdecfc1cc6ae03ae746a1b4a4d22e
Reviewed-on: https://go-review.googlesource.com/c/go/+/715521
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Michael Pratt <[email protected]>
Reviewed-by: Michael Knyszek <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>

Author: ianlancetaylor

src/runtime/funcdata.h

@@ -12,6 +12,7 @@
 #define PCDATA_StackMapIndex 1
 #define PCDATA_InlTreeIndex 2
 #define PCDATA_ArgLiveIndex 3
+#define PCDATA_PanicBounds 4
 
 #define FUNCDATA_ArgsPointerMaps 0 /* garbage collector blocks */
 #define FUNCDATA_LocalsPointerMaps 1