purism/librem13v2: Add memory init code

Adding code to setup the spd information from sodimm.
Adapted from intel/kblrvp.

Change-Id: I0403f999dac1bdef0e9e1abe7c9c62407e223bb1
Signed-off-by: Youness Alaoui <youness.alaoui@puri.sm>
Reviewed-on: https://review.coreboot.org/19935
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/mainboard/purism/librem13v2/Kconfig b/src/mainboard/purism/librem13v2/Kconfig
index 2b3c0642..4de48a9 100644
--- a/src/mainboard/purism/librem13v2/Kconfig
+++ b/src/mainboard/purism/librem13v2/Kconfig
@@ -46,4 +46,13 @@
 	string
 	default "8086,1916"
 
+config DIMM_MAX
+	int
+	default 1
+
+config DIMM_SPD_SIZE
+	int
+	default 512
+
+
 endif