Code/Comments cleanup

Tabs to spaces
Whitespace
Normalize clang-format comments

src/device/keyboard.c

@@ -34,7 +34,7 @@ void (*keyboard_send)(uint16_t val);
 static int recv_key[512]; /* keyboard input buffer */
 static int oldkey[512];
 #if 0
-static int	keydelay[512];
+static int keydelay[512];
 #endif
 static scancode *scan_table; /* scancode table for keyboard */
 

src/device/serial.c

@@ -52,6 +52,7 @@ static int             next_inst = 0;
 static serial_device_t serial_devices[SERIAL_MAX];
 
 //#define ENABLE_SERIAL_CONSOLE 1
+
 #ifdef ENABLE_SERIAL_LOG
 int serial_do_log = ENABLE_SERIAL_LOG;