device/resource_allocator_v3: Drop code

No platform uses this anymore.

Change-Id: Ifccb59ae45daa8fec41a9a2d46c628ff24a0c998
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69140
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>

src/device/Kconfig

@@ -699,7 +699,6 @@ config PCIEXP_HOTPLUG_PREFETCH_MEM
 
 config PCIEXP_HOTPLUG_PREFETCH_MEM_ABOVE_4G
 	bool
-	depends on RESOURCE_ALLOCATOR_V4
 	default y if !PCIEXP_HOTPLUG_PREFETCH_MEM_BELOW_4G
 	default n
 	help
@@ -922,28 +921,9 @@ config I2C_TRANSFER_TIMEOUT_US
 	  maximum time a device could stretch clock bits before the transfer
 	  is aborted and an error returned.
 
-config RESOURCE_ALLOCATOR_V3
-	bool
-	default n
-	help
-	  This config option enables resource allocator v3 which performs
-	  top down allocation of resources in a single MMIO window. This is the
-	  old resource allocator meant to be used only until the broken AMD
-	  chipsets are fixed. DO NOT USE THIS FOR ANY NEW CHIPSETS!
-
-config RESOURCE_ALLOCATOR_V4
-	bool
-	default n if RESOURCE_ALLOCATOR_V3
-	default y if !RESOURCE_ALLOCATOR_V3
-	help
-	  This config option enables resource allocator v4 which uses multiple
-	  ranges for allocating resources. This allows allocation of resources
-	  above 4G boundary as well.
-
 config RESOURCE_ALLOCATION_TOP_DOWN
 	bool "Allocate resources from top down"
 	default n
-	depends on RESOURCE_ALLOCATOR_V4
 	help
 	  Should be the default, but many platforms don't report resources
 	  correctly. Hence, the allocator might cause conflicts.

src/device/Makefile.inc

@@ -59,8 +59,7 @@ romstage-y += mmio.c
 ramstage-y += mmio.c
 
 ramstage-y += resource_allocator_common.c
-ramstage-$(CONFIG_RESOURCE_ALLOCATOR_V3) += resource_allocator_v3.c
-ramstage-$(CONFIG_RESOURCE_ALLOCATOR_V4) += resource_allocator_v4.c
+ramstage-y += resource_allocator_v4.c
 
 ramstage-$(CONFIG_XHCI_UTILS) += xhci.c