hnbgw: put copyright into define

Fix the following compile error, seen on ubuntu 18.04 with GCC 7.5.0,
opensuse 15.4 and our OE builds:

  hnbgw.c:549:15: error: initializer element is not constant
    .copyright = hnbgw_copyright,
                 ^~~~~~~~~~~~~~~

Fixes: 04844415 ("move main() to separate file")
Change-Id: I13b2569a369724e0298b064a0876b95d6dafd9d0
---
M src/osmo-hnbgw/hnbgw.c
1 file changed, 25 insertions(+), 8 deletions(-)

diff --git a/src/osmo-hnbgw/hnbgw.c b/src/osmo-hnbgw/hnbgw.c
index 8876580..6bf7b3f 100644
--- a/src/osmo-hnbgw/hnbgw.c
+++ b/src/osmo-hnbgw/hnbgw.c
@@ -491,13 +491,13 @@
 	return ranap_msg;
 }
 
-static const char * const hnbgw_copyright =
-	"OsmoHNBGW - Osmocom Home Node B Gateway implementation\r\n"
-	"Copyright (C) 2016-2023 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>\r\n"
-	"Contributions by Daniel Willmann, Harald Welte, Neels Hofmeyr\r\n"
-	"License AGPLv3+: GNU AGPL version 3 or later <http://gnu.org/licenses/agpl-3.0.html>\r\n"
-	"This is free software: you are free to change and redistribute it.\r\n"
-	"There is NO WARRANTY, to the extent permitted by law.\r\n";
+#define HNBGW_COPYRIGHT \
+	"OsmoHNBGW - Osmocom Home Node B Gateway implementation\r\n" \
+	"Copyright (C) 2016-2023 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>\r\n" \
+	"Contributions by Daniel Willmann, Harald Welte, Neels Hofmeyr\r\n" \
+	"License AGPLv3+: GNU AGPL version 3 or later <http://gnu.org/licenses/agpl-3.0.html>\r\n" \
+	"This is free software: you are free to change and redistribute it.\r\n" \
+	"There is NO WARRANTY, to the extent permitted by law.\r\n"
 
 static const struct log_info_cat hnbgw_log_cat[] = {
 	[DMAIN] = {
@@ -546,5 +546,5 @@
 	.name = "OsmoHNBGW",
 	.version = PACKAGE_VERSION,
 	.go_parent_cb = hnbgw_vty_go_parent,
-	.copyright = hnbgw_copyright,
+	.copyright = HNBGW_COPYRIGHT,
 };

