asoc: add multi stream support for display port

Add support to share a common display afe port between
two pcm streams.
Add mixer controls to set/get format, channels, sample rate
and configure controller/stream for display port 1.

Change-Id: Ie8fb95d57fba129e623c7513ec92dd800b5ea80b
Signed-off-by: Vignesh Kulothungan <vigneshk@codeaurora.org>

asoc/msm-pcm-routing-v2.c

@@ -5459,6 +5459,7 @@ static const char *const ec_ref_rx[] = { "None", "SLIM_RX", "I2S_RX",
 	"QUAT_TDM_RX_0", "QUAT_TDM_RX_1", "QUAT_TDM_RX_2", "SLIM_6_RX",
 	"TERT_MI2S_RX", "QUAT_MI2S_RX", "TERT_TDM_TX_0", "USB_AUDIO_RX",
 	"INT0_MI2S_RX", "INT4_MI2S_RX", "INT3_MI2S_TX", "DISPLAY_PORT",
+	"DISPLAY_PORT1",
 	"WSA_CDC_DMA_RX_0", "WSA_CDC_DMA_RX_1",
 	"WSA_CDC_DMA_TX_0", "WSA_CDC_DMA_TX_1", "WSA_CDC_DMA_TX_2",
 	"SLIM_7_RX", "RX_CDC_DMA_RX_0", "RX_CDC_DMA_RX_1", "RX_CDC_DMA_RX_2",