asoc: codecs: Initial lpass-cdc 2.6 implementation

Update register headers, add version 2.6 string.

Change-Id: I6236ddebba3fcbb37f2a64c8638d4eea4f6cc062
Signed-off-by: Matthew Rice <mrice@codeaurora.org>

asoc/codecs/lpass-cdc/lpass-cdc.h

@@ -14,6 +14,7 @@
 #define LPASS_CDC_VERSION_2_0 0x0004
 #define LPASS_CDC_VERSION_2_1 0x0005
 #define LPASS_CDC_VERSION_2_5 0x0006
+#define LPASS_CDC_VERSION_2_6 0x0007
 
 enum {
 	START_MACRO,