AMD f16kb: use AZ_PIN in Kconfig to customize AZALIA_PIN in Yangtze

src/southbridge/amd/agesa/hudson/Kconfig config default value,
mainboard Kconfig config value for specific mainboard.
bit 1,0 - pin 0
bit 3,2 - pin 1
bit 5,4 - pin 2
bit 7,6 - pin 3

Change-Id: I54a87cf734685515a3e1850838ca7d94387172ce
Signed-off-by: WANG Siyuan <SiYuan.Wang@amd.com>
Signed-off-by: WANG Siyuan <wangsiyuanbuaa@gmail.com>
Reviewed-on: http://review.coreboot.org/3879
Tested-by: build bot (Jenkins)
Reviewed-by: Bruce Griffith <Bruce.Griffith@se-eng.com>
Reviewed-by: Dave Frodin <dave.frodin@se-eng.com>
diff --git a/src/southbridge/amd/agesa/hudson/Kconfig b/src/southbridge/amd/agesa/hudson/Kconfig
index 5cb1722..7e7399c 100644
--- a/src/southbridge/amd/agesa/hudson/Kconfig
+++ b/src/southbridge/amd/agesa/hudson/Kconfig
@@ -247,4 +247,13 @@
 	config AMD_SB_SPI_TX_LEN
 		int
 		default 64
+
+	config AZ_PIN
+		hex
+		default 0xaa
+		help
+		  bit 1,0 - pin 0
+		  bit 3,2 - pin 1
+		  bit 5,4 - pin 2
+		  bit 7,6 - pin 3
 endif