intel/skylake: mainboards: Add MAINBOARD_FAMILY kconfig entry

The family variable was not being set yet for skylake, add this
to the current boards.

BUG=chromium:551715
BRANCH=none
TEST=emerge-glados coreboot

Change-Id: Icf175e4ce89cb47b9eabce1399eb3ef29e7a607f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 7e379402f38634eb0204e03b616111fff9515cec
Original-Change-Id: Ia31fb04b5c22defc71a0c02d9fa1eff93ccbc49d
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/311213
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/12390
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/mainboard/google/chell/Kconfig b/src/mainboard/google/chell/Kconfig
index c7e2a18..f09198f 100644
--- a/src/mainboard/google/chell/Kconfig
+++ b/src/mainboard/google/chell/Kconfig
@@ -43,6 +43,10 @@
 	string
 	default "Chell"
 
+config MAINBOARD_FAMILY
+	string
+	default "Google_Glados"
+
 config MAX_CPUS
 	int
 	default 8
diff --git a/src/mainboard/google/glados/Kconfig b/src/mainboard/google/glados/Kconfig
index 2dd3bddc..029aa1b 100644
--- a/src/mainboard/google/glados/Kconfig
+++ b/src/mainboard/google/glados/Kconfig
@@ -43,6 +43,10 @@
 	string
 	default "Glados"
 
+config MAINBOARD_FAMILY
+	string
+	default "Google_Glados"
+
 config MAX_CPUS
 	int
 	default 8
diff --git a/src/mainboard/google/lars/Kconfig b/src/mainboard/google/lars/Kconfig
index 4026863..4a1bce9 100644
--- a/src/mainboard/google/lars/Kconfig
+++ b/src/mainboard/google/lars/Kconfig
@@ -42,6 +42,10 @@
 	string
 	default "Lars"
 
+config MAINBOARD_FAMILY
+	string
+	default "Intel_Kunimitsu"
+
 config MAX_CPUS
 	int
 	default 8
diff --git a/src/mainboard/intel/kunimitsu/Kconfig b/src/mainboard/intel/kunimitsu/Kconfig
index 03c31f0..4132e86 100644
--- a/src/mainboard/intel/kunimitsu/Kconfig
+++ b/src/mainboard/intel/kunimitsu/Kconfig
@@ -42,6 +42,10 @@
 	string
 	default "Kunimitsu"
 
+config MAINBOARD_FAMILY
+	string
+	default "Intel_Kunimitsu"
+
 config MAX_CPUS
 	int
 	default 8