bluez: Update to version 5.51

Signed-off-by: Bruno Randolf <br1@einfach.org>

utils/bluez/patches/003-Increase-firmware-load-timeout-to-30s.patch

@@ -7,9 +7,11 @@ Subject: [PATCH 3/4] Increase firmware load timeout to 30s
  tools/hciattach.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
 
---- a/tools/hciattach.c
-+++ b/tools/hciattach.c
-@@ -1239,7 +1239,7 @@ int main(int argc, char *argv[])
+Index: bluez-5.51/tools/hciattach.c
+===================================================================
+--- bluez-5.51.orig/tools/hciattach.c
++++ bluez-5.51/tools/hciattach.c
+@@ -1240,7 +1240,7 @@ int main(int argc, char *argv[])
  {
  	struct uart_t *u = NULL;
  	int detach, printpid, raw, opt, i, n, ld, err;