soc/intel/jasperlake: Utilize vbt data size Kconfig option

Currently maximum VBT data size for Jasper Lake is 8KB, but Bugzzy
would use VBT data over 8KB. This change makes use of Kconfig option to
increase the maximum VBT data size to 9KB for Jasper Lake.

BUG=b:194029827
BRANCH=dedede
TEST=build and boot bugzzy and verify fw screen is loaded

Change-Id: I0abe1ba5609b48a8a8b15f88bec28342ce26c78f
Signed-off-by: Seunghwan Kim <sh_.kim@samsung.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57201
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/jasperlake/Kconfig b/src/soc/intel/jasperlake/Kconfig
index fa26a54..c40c153 100644
--- a/src/soc/intel/jasperlake/Kconfig
+++ b/src/soc/intel/jasperlake/Kconfig
@@ -174,6 +174,10 @@
 	hex
 	default 0xc35
 
+config VBT_DATA_SIZE_KB
+	int
+	default 9
+
 config VBOOT
 	select VBOOT_SEPARATE_VERSTAGE
 	select VBOOT_MUST_REQUEST_DISPLAY