util/ifdtool: Add Elkhart Lake platform support under IFDv2

Add EHL under same family tree as TGL & JSL, also fix a
spacing inconsistency line.

Signed-off-by: Lean Sheng Tan <lean.sheng.tan@intel.com>
Change-Id: Ice09861c104c4e339fc83631c75089fa069b3931
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55357
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

util/ifdtool/ifdtool.h

@@ -46,6 +46,7 @@ enum ich_chipset {
 enum platform {
 	PLATFORM_APL,
 	PLATFORM_CNL,
+	PLATFORM_EHL,
 	PLATFORM_GLK,
 	PLATFORM_ICL,
 	PLATFORM_JSL,