Port to meson

Similar to ports done elsewhere, port this repo to meson.

Change-Id: I8be9f36b55eb52d085958919cd6c853b46b93674
Signed-off-by: Ed Tanous <edtanous@google.com>
diff --git a/btbridged.c b/btbridged.c
index d51b078..a24d5f8 100644
--- a/btbridged.c
+++ b/btbridged.c
@@ -227,7 +227,7 @@
 			r = r->next;
 
 		if (!r) {
-			MSG_ERR("Didn't find element %p in queue\n", element);
+			MSG_ERR("Didn't find element %p in queue\n", (void*)element);
 			bt_q_free(element);
 			return NULL;
 		}
@@ -559,7 +559,7 @@
 				new->req.seq, new->req.netfn, new->req.lun, new->req.cmd);
 
 		if (verbosity == BT_LOG_DEBUG) {
-			int i;
+			size_t i;
 			for (i = 0; i < new->req.data_len; i++) {
 				if (i % 8 == 0) {
 					if (i)