mb/starlabs/starbook: Disable ASPM in coreboot

ASPM is already configured by FSP so disable it in coreboot to
reduce boot time by a whopping 34ms.

Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I073c68dafa9baa90e253b5230f84b0de6a7e5c47
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73982
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <jacz@semihalf.com>
diff --git a/src/mainboard/starlabs/starbook/Kconfig b/src/mainboard/starlabs/starbook/Kconfig
index d35a4d2..b2dfe12 100644
--- a/src/mainboard/starlabs/starbook/Kconfig
+++ b/src/mainboard/starlabs/starbook/Kconfig
@@ -145,9 +145,30 @@
 	string
 	default "3rdparty/blobs/mainboard/starlabs/Logo.bmp"
 
+config PCIEXP_ASPM
+	bool
+	default n
+	help
+	  FSP is already taking care of ASPM, which is configured through the devicetree in coreboot
+	  on Alderlake Platforms. Disable it to save some boot time.
+
 config PCIEXP_DEFAULT_MAX_RESIZABLE_BAR_BITS
 	default 32
 
+config PCIEXP_L1_SUB_STATE
+	bool
+	default n
+	help
+	  Enabling PCIe L1 sub states is already done in FSP.
+	  Disable it to save some boot time.
+
+config PCIEXP_CLK_PM
+	bool
+	default n
+	help
+	  Enabling PCIe clock power management is already done in FSP.
+	  Disable it to save some boot time
+
 config SOC_INTEL_CSE_SEND_EOP_EARLY
 	default n if BOARD_STARLABS_STARBOOK_ADL