intel/meteorlake: remove skip_mbp_hob SOC chip config

Introduce at new config option CONFIG_FSP_PUBLISH_MBP_HOB to
control the creation of ME_BIOS_PAYLOAD_HOB (MBP HOB) by FSP.

This new option is hooked with `SkipMbpHob` UPD and is always
disabled for ChromeOS platforms.

This made skip_mbp_hob SOC chip config variable redundant
which is also removed as part of this change.

BUG=none
TEST=Build and boot to Google/Rex.

Signed-off-by: Kapil Porwal <kapilporwal@google.com>
Change-Id: Iaba1ea29a92a63d2b287e1ccdea1a81ec07b9971
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71997
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
diff --git a/src/soc/intel/meteorlake/Kconfig b/src/soc/intel/meteorlake/Kconfig
index 2ae9ace..8b3a553 100644
--- a/src/soc/intel/meteorlake/Kconfig
+++ b/src/soc/intel/meteorlake/Kconfig
@@ -371,4 +371,12 @@
 
 endchoice
 
+config FSP_PUBLISH_MBP_HOB
+	bool
+	default n if CHROMEOS
+	default y
+	help
+	  This is to control creation of ME_BIOS_PAYLOAD_HOB (MBP HOB) by FSP.
+	  Disabling it for the platforms, which do not use MBP HOB, can improve the boot time.
+
 endif