Add more AMD firmware settings

Change-Id: I8834f04a7945370d7454ef41252ad5db20762054

src/mainboard/system76/kudu6/Kconfig

@@ -38,6 +38,9 @@ config MAINBOARD_SMBIOS_PRODUCT_NAME
 config MAINBOARD_VERSION
 	default "kudu6"
 
+config AMD_FWM_POSITION_INDEX
+	default 3
+
 config CBFS_SIZE
 	default 0xA00000
 
@@ -50,6 +53,21 @@ config DIMM_MAX
 config DIMM_SPD_SIZE
 	default 512
 
+config EFS_SPI_READ_MODE
+	default 4          # Dual IO (1-2-2)
+
+config EFS_SPI_SPEED
+	default 0	# 66MHz
+
+config EFS_SPI_MICRON_FLAG
+	default 0
+
+config NORMAL_READ_SPI_SPEED
+	default 1	# 33MHz
+
+config ALT_SPI_SPEED
+	default 0	# 66MHz
+
 config ONBOARD_VGA_IS_PRIMARY
 	default y