google/kahlee: Set eMMC slot

Set AGESA SD/eMMc variable to non-removable eMMc.

BUG=b:63891719
BRANCH=none
TEST=Boot eMMC on Kahlee.

Change-Id: I76ed9cec36a9688ebe75db2077f1ece4ab750c16
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/20911
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/kahlee/BiosCallOuts.c

@@ -54,6 +54,10 @@ static AGESA_STATUS fch_initenv(UINT32 Func, UINTN FchData, VOID *ConfigPtr)
 			FchParams_env->Sata.SataIdeMode = TRUE;
 			break;
 		}
+
+		/* SDHCI/MMC configuration */
+		FchParams_env->Sd.SdSlotType = 1; /* eMMC */
+
 		printk(BIOS_DEBUG, "Done\n");
 	}