re-enable uart channel device driver installation

i'm not really sure why this was commented out to begin with. possibly
due to the broken parsing of the channel path string in uart_open, but
i am unsure exactly.

src/dev/uart.c

@@ -293,7 +293,7 @@ short uart_open(p_channel chan, const unsigned char * spec, short mode) {
         uart_setbps(cdev_to_uart(chan->dev), bps_code);
 
         // Get the next token
-        token = strtok_r(spec_copy, ",", &saveptr);
+        token = strtok_r(NULL, ",", &saveptr);
         if (token) {
             // Parse the data bit count
             i = atoi(token);
@@ -320,7 +320,7 @@ short uart_open(p_channel chan, const unsigned char * spec, short mode) {
             }
 
             // Get the next token
-            token = strtok_r(spec_copy, ",", &saveptr);
+            token = strtok_r(NULL, ",", &saveptr);
             if (token) {
                 // Parse the stop bit count (1 or 2)
                 i = atoi(token);
@@ -334,7 +334,7 @@ short uart_open(p_channel chan, const unsigned char * spec, short mode) {
                 }
 
                 // Get the next token
-                token = strtok_r(spec_copy, ",", &saveptr);
+                token = strtok_r(NULL, ",", &saveptr);
                 if (token) {
                     // NONE, ODD, EVEN, MARK, or SPACE
                     if (strcmp(token, "NONE") == 0) {

src/toolbox.c

@@ -246,11 +246,11 @@ void initialize() {
     }
 #endif
 
-//     if (res = uart_install()) {
-//         log_num(LOG_ERROR, "FAILED: serial port initialization", res);
-//     } else {
-//         log(LOG_INFO, "Serial ports initialized.");
-//     }
+     if ((res = uart_install())) {
+         log_num(LOG_ERROR, "FAILED: serial port initialization", res);
+     } else {
+         log(LOG_INFO, "Serial ports initialized.");
+     }
 
     if ((res = fsys_init())) {
         log_num(LOG_ERROR, "FAILED: file system initialization", res);