firmware/lm32: Fix bad search/replace.

```
 CC       edid.o
edid.c: In function ‘get_monitor_name’:
edid.c:131:19: warning: multi-character character constant [-Wmultichar]
  c = strchr(name, '\r\n');
                   ^
```

Was broken in 102c226

Author: mithro

firmware/lm32/edid.c

@@ -128,7 +128,7 @@ void get_monitor_name(const void *buf, char *name)
 
 	name[MAX_MONITOR_NAME_LEN] = 0;
 	memcpy(name, &data_block[5], MAX_MONITOR_NAME_LEN);
-	c = strchr(name, '\r\n');
+	c = strchr(name, '\n');
 	if(c)
 		*c = 0;
 }