daemon: fix sign-conversion warning in dlt_timer_conn_types array type

Change dlt_timer_conn_types from char[] to DltConnectionType[] to match
the actual type of values stored in the array.

This was silently working on arm64 because char is unsigned by default on
that architecture, making it compatible with DltConnectionType (an unsigned
enum). On x86_64, char is signed by default, causing an implicit signed-to-
unsigned conversion when passing array elements to dlt_connection_create(),
which triggered -Wsign-conversion and broke the build.

The fix corrects the array's declared type to match its contents, making the
code portable regardless of the platform's char signedness.

Upstream-Status: Pending
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
--- a/src/daemon/dlt-daemon.c
+++ b/src/daemon/dlt-daemon.c
@@ -140,7 +140,7 @@ int g_signo = 0;
 /* used for value from conf file */
 static int value_length = 1024;
 
-static char dlt_timer_conn_types[DLT_TIMER_UNKNOWN + 1] = {
+static DltConnectionType dlt_timer_conn_types[DLT_TIMER_UNKNOWN + 1] = {
     [DLT_TIMER_PACKET] = DLT_CONNECTION_ONE_S_TIMER,
     [DLT_TIMER_ECU] = DLT_CONNECTION_SIXTY_S_TIMER,
 #ifdef DLT_SYSTEMD_WATCHDOG_ENABLE
