[PATCH] aarch64: Update aarch64-sys-regs.def header

[Victor Do Nascimento]

Given the shared use of the aarch64-sys-regs.def file across Binutils
and GCC, add instructions for keeping the file synchronized across the
two codebases.

Namely, it should be made clear that all changes are first to be made
in Binutils and the updated file copied across to GCC.

opcodes/ChangeLog

	* opcodes/aarch64-sys-regs.def: Update file-description header
	comment.
---
 opcodes/aarch64-sys-regs.def | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/opcodes/aarch64-sys-regs.def b/opcodes/aarch64-sys-regs.def
index 1986920ebd1..9adabea5cd4 100644
--- a/opcodes/aarch64-sys-regs.def
+++ b/opcodes/aarch64-sys-regs.def
@@ -20,6 +20,10 @@
 
 /* Array of system registers and their associated arch features.
 
+   This file is also used by GCC.  Where necessary, any updates should
+   be made in Binutils and the updated file copied across to GCC, such
+   that the two projects are kept in sync at all times.
+
    Before using #include to read this file, define a macro:
 
      SYSREG (name, encoding, flags, features)
-- 
2.41.0