[committed] Fix gdb/remote.c build failure

[Szabolcs Nagy <szabolcs.nagy@arm.com>]

Add const qualifier to fix

/S/gdb/common/gdb_locale.h:35:27: error: deprecated conversion from string constant to 'char*' [-Werror=write-strings]
  # define _(String) (String)
                            ^
/S/gdb/remote.c:12844:19: note: in expansion of macro '_'
    char *err_msg = _("Tracepoint packet too large for target.");
                    ^
gdb/ChangeLog:

	* remote.c (remote_target::download_tracepoint): Change char* to
	const char*.
---
  gdb/ChangeLog | 5 +++++
  gdb/remote.c  | 2 +-
  2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 6702b445b7..2f5d1ef8b7 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2018-08-08  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* remote.c (remote_target::download_tracepoint): Change char* to
+	const char*.
+
  2018-08-07  Simon Marchi  <simon.marchi@polymtl.ca>

  	* target.h (target_options_to_string): Return an std::string.
diff --git a/gdb/remote.c b/gdb/remote.c
index 33f6cd57aa..3b19da75ea 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -12841,7 +12841,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
    struct tracepoint *t = (struct tracepoint *) b;
    struct remote_state *rs = get_remote_state ();
    int ret;
-  char *err_msg = _("Tracepoint packet too large for target.");
+  const char *err_msg = _("Tracepoint packet too large for target.");
    size_t size_left;

    /* We use a buffer other than rs->buf because we'll build strings
-- 
2.14.1