soc/intel/alderlake: Drop unused `PCH_DEV_SLOT_LPC` macro

This patch drops the unused `PCH_DEV_SLOT_LPC` macro from the
Alder Lake SoC PCI device list.

BUG=none
TEST=Able to build and boot taeko, google board.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: Ib2ae40fcc4499de34534f27f03b4c359c37409e6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64586
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/alderlake/include/soc/pci_devs.h b/src/soc/intel/alderlake/include/soc/pci_devs.h
index b7196df..ea1053b 100644
--- a/src/soc/intel/alderlake/include/soc/pci_devs.h
+++ b/src/soc/intel/alderlake/include/soc/pci_devs.h
@@ -211,7 +211,6 @@
 #define  PCH_DEV_GSPI1		_PCH_DEV(SIO5, 3)
 
 #define PCH_DEV_SLOT_ESPI	0x1f
-#define PCH_DEV_SLOT_LPC	PCH_DEV_SLOT_ESPI
 #define  PCH_DEVFN_ESPI		_PCH_DEVFN(ESPI, 0)
 #define  PCH_DEVFN_P2SB		_PCH_DEVFN(ESPI, 1)
 #define  PCH_DEVFN_PMC		_PCH_DEVFN(ESPI, 2)