x86: coral: Put the eMMC first

At present the eMMC device does not have an alias so it appears after
the SD card which is device 1. There is no device 0 which is odd.

Make the eMMC device be the first one. Update the boot script to use the
new device.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
diff --git a/include/configs/chromebook_coral.h b/include/configs/chromebook_coral.h
index 6e8e8ec..00760b8 100644
--- a/include/configs/chromebook_coral.h
+++ b/include/configs/chromebook_coral.h
@@ -12,13 +12,13 @@
 
 #define CONFIG_BOOTCOMMAND	\
 	"tpm init; tpm startup TPM2_SU_CLEAR; " \
-	"read mmc 2:2 100000 0 80; setexpr loader *001004f0; " \
+	"read mmc 0:2 100000 0 80; setexpr loader *001004f0; " \
 	"setexpr size *00100518; setexpr blocks $size / 200; " \
-	"read mmc 2:2 100000 80 $blocks; setexpr setup $loader - 1000; " \
+	"read mmc 0:2 100000 80 $blocks; setexpr setup $loader - 1000; " \
 	"setexpr cmdline_ptr $loader - 2000; " \
 	"setexpr.s cmdline *$cmdline_ptr; " \
 	"setexpr cmdline gsub %U \\\\${uuid}; " \
-	"if part uuid mmc 2:2 uuid; then " \
+	"if part uuid mmc 0:2 uuid; then " \
 	"zboot start 100000 0 0 0 $setup cmdline; " \
 	"zboot load; zboot setup; zboot dump; zboot go;" \
 	"fi"