ASoC: msm: Add Secondary AUXPCM CPU driver

Enable support for AUX PCM over secondary audio interface by
adding CPU dai which configures QDSP6 AFE on secondary AUX
PCM ports 12 and 13.
Configure the GPIO for Secondary AUXPCM interface.

Change-Id: I8db7e8c967c667923a11992e9fab41ab3b4cc292
Signed-off-by: Shiv Maliyappanahalli <smaliyap@codeaurora.org>
diff --git a/include/sound/apr_audio.h b/include/sound/apr_audio.h
index 96795a3..ec8d73e 100644
--- a/include/sound/apr_audio.h
+++ b/include/sound/apr_audio.h
@@ -59,6 +59,9 @@
 #define INT_FM_TX 0x3005		/* index = 29 */
 #define RT_PROXY_PORT_001_RX	0x2000    /* index = 30 */
 #define RT_PROXY_PORT_001_TX	0x2001    /* index = 31 */
+#define SECONDARY_PCM_RX 12			/* index = 32 */
+#define SECONDARY_PCM_TX 13			/* index = 33 */
+
 
 #define AFE_PORT_INVALID 0xFFFF
 #define SLIMBUS_EXTPROC_RX AFE_PORT_INVALID