Change in coreboot[master]: mb/google/reef: Cache EC's SKU ID on Coral

[Patrick Georgi (Code Review)]

Patrick Georgi has uploaded this change for review. ( https://review.coreboot.org/21737

Change subject: mb/google/reef: Cache EC's SKU ID on Coral
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mb/google/reef: Cache EC's SKU ID on Coral

Change-Id: I1925f51d63290b8d08366b622d5df3aab3a7484e
Signed-off-by: Patrick Georgi 
---
M src/mainboard/google/reef/variants/coral/mainboard.c
1 file changed, 6 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/37/21737/1

diff --git a/src/mainboard/google/reef/variants/coral/mainboard.c b/src/mainboard/google/reef/variants/coral/mainboard.c
index 1abfa0a..35a635d 100644
--- a/src/mainboard/google/reef/variants/coral/mainboard.c
+++ b/src/mainboard/google/reef/variants/coral/mainboard.c
@@ -31,8 +31,12 @@

uint8_t variant_board_sku(void)
 {
-	// we know that the values are in 0..255
-	return google_chromeec_get_sku_id();
+	static int sku = -1;
+
+	if (sku == -1)
+		sku = google_chromeec_get_sku_id();
+
+	return sku;
 }

void variant_nhlt_oem_overrides(const char **oem_id,