fixed missing newline at the end of a few files

source/cd_hw/cd_cart.c

@@ -264,4 +264,4 @@ void cd_cart_init(void)
       }
     }
   }
-}
+}

source/input_hw/terebi_oekaki.c

@@ -74,4 +74,4 @@ void terebi_oekaki_write(unsigned char data)
 
   /* set BUSY flag */
   tablet.busy = 1;
-}
+}

source/sound/sn76489.h

@@ -20,4 +20,4 @@ extern void SN76489_Update(unsigned int cycles);
 extern void *SN76489_GetContextPtr(void);
 extern int SN76489_GetContextSize(void);
 
-#endif /* _SN76489_H_ */
+#endif /* _SN76489_H_ */