lib/Makefile.inc: fix name of config string

The config string is HAVE_SPD_IN_CBFS, without the "BIN".

Signed-off-by: Paul Fagerburg <pfagerburg@google.com>
Change-Id: I728f64b2dd93b0e3947983b9b3701e185feff571
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45739
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 73077f7..ce57f51 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -358,7 +358,7 @@
 # Include spd ROM data
 $(LIB_SPD_BIN): $(LIB_SPD_DEPS)
 	test -n "$(SPD_SOURCES)" || \
-	    (echo "HAVE_SPD_BIN_IN_CBFS is set but SPD_SOURCES is empty" && exit 1)
+	    (echo "HAVE_SPD_IN_CBFS is set but SPD_SOURCES is empty" && exit 1)
 	test -n "$(LIB_SPD_DEPS)" || \
 	    (echo "SPD_SOURCES is set but no SPD file was found" && exit 1)
 	for f in $(LIB_SPD_DEPS); \