UefiPayloadPkg: Fix PciLib dependency on BlSupportDxe

The PciLib depends on PCDs
- PcdPciExpressBaseAddress
- PcdPciExpressBaseSize
being updated by BlSupportDxe before MMCONF accesses are working.

Add BlSupportDxe to APRIORI to start it first and get the system into
an usable state where at least PCI accesses work reliable.

Fixes a bug where BlSupportDxe is scheduled too late and other DXEs fail
to load due to broken PCI access.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Maurice Ma <maurice.ma@intel.com>

UefiPayloadPkg/UefiPayloadPkg.fdf

@@ -80,6 +80,11 @@ READ_STATUS        = TRUE
 READ_LOCK_CAP      = TRUE
 READ_LOCK_STATUS   = TRUE
 
+APRIORI DXE {
+  INF  MdeModulePkg/Universal/DevicePathDxe/DevicePathDxe.inf
+  INF  MdeModulePkg/Universal/PCD/Dxe/Pcd.inf
+  INF  UefiPayloadPkg/BlSupportDxe/BlSupportDxe.inf
+}
 
 #
 # DXE Phase modules