Input: wistron_btns - add keymap for AOpen 1557

This one does not have anything useful in DMI either so again
we need to use:

    force=1 keymap=aopen1557
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

drivers/input/misc/wistron_btns.c

@@ -611,10 +611,24 @@ static struct key_entry keymap_wistron_generic[] __initdata = {
 	{ KE_END, 0 }
 };
 
+static struct key_entry keymap_aopen_1557[] __initdata = {
+	{ KE_KEY,  0x01, {KEY_HELP} },
+	{ KE_KEY,  0x11, {KEY_PROG1} },
+	{ KE_KEY,  0x12, {KEY_PROG2} },
+	{ KE_WIFI, 0x30 },
+	{ KE_KEY,  0x22, {KEY_REWIND} },
+	{ KE_KEY,  0x23, {KEY_FORWARD} },
+	{ KE_KEY,  0x24, {KEY_PLAYPAUSE} },
+	{ KE_KEY,  0x25, {KEY_STOPCD} },
+	{ KE_KEY,  0x31, {KEY_MAIL} },
+	{ KE_KEY,  0x36, {KEY_WWW} },
+	{ KE_END,  0 }
+};
+
 static struct key_entry keymap_prestigio[] __initdata = {
 	{ KE_KEY,  0x11, {KEY_PROG1} },
 	{ KE_KEY,  0x12, {KEY_PROG2} },
-	{ KE_WIFI,  0x30 },
+	{ KE_WIFI, 0x30 },
 	{ KE_KEY,  0x22, {KEY_REWIND} },
 	{ KE_KEY,  0x23, {KEY_FORWARD} },
 	{ KE_KEY,  0x24, {KEY_PLAYPAUSE} },
@@ -985,6 +999,8 @@ static int __init select_keymap(void)
 	if (keymap_name != NULL) {
 		if (strcmp (keymap_name, "1557/MS2141") == 0)
 			keymap = keymap_wistron_ms2141;
+		else if (strcmp (keymap_name, "aopen1557") == 0)
+			keymap = keymap_aopen_1557;
 		else if (strcmp (keymap_name, "prestigio") == 0)
 			keymap = keymap_prestigio;
 		else if (strcmp (keymap_name, "generic") == 0)