ALSA: Extend sound jack to support upto 8 key events.

ALSA sound jack currently only supports upto 6 key events on a single
jack. Extend sound jack to support upto 8 buttons

CRs-fixed: 390846
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
(cherry picked from commit 33cca1e3db8b961f898daa776b99621def9219d6)
(cherry picked from commit c012ad9fb0a819842ecd7ff672c19bbe17bf2f82)

Change-Id: I33a46404b67b83721afde56b45defb40b529391a
Signed-off-by: Sudhir Sharma <sudsha@codeaurora.org>
diff --git a/include/sound/jack.h b/include/sound/jack.h
index 1089ba4..8e8c133 100644
--- a/include/sound/jack.h
+++ b/include/sound/jack.h
@@ -64,7 +64,7 @@
 	int type;
 	const char *id;
 	char name[100];
-	unsigned int key[6];   /* Keep in sync with definitions above */
+	unsigned int key[8];   /* Keep in sync with definitions above */
 	void *private_data;
 	void (*private_free)(struct snd_jack *);
 };