Update pn544.h.

Change-Id: I59d17ee477108a7ef955401599582465c18d6715
diff --git a/original/linux/pn544.h b/original/linux/pn544.h
index e23aa3c..9285000 100755
--- a/original/linux/pn544.h
+++ b/original/linux/pn544.h
@@ -22,9 +22,9 @@
  * PN544 power control via ioctl
  * PN544_SET_PWR(0): power off
  * PN544_SET_PWR(1): power on
- * PN544_SET_PWR(>1): power on with firmware download enabled
+ * PN544_SET_PWR(2): reset and power on with firmware download enabled
  */
-#define PN544_SET_PWR	_IOW(0xE9, 0x01, unsigned int)
+#define PN544_SET_PWR	_IOW(PN544_MAGIC, 0x01, unsigned int)
 
 struct pn544_i2c_platform_data {
 	unsigned int irq_gpio;