hv: create new file core.c and pci.c

- move the functions to access physical PCI configuration space from
  pci_pt.c to the new file dm/hw/pci.c, so they can be accessed in
  sharing mode as well. The new folder dm/hw is created in order to
  move APIs talking to physical PCI devices out of dm/vpci.
- move the common vpci code from header file pci_priv.h to core.c.
- move file include/dm/vpci/vpci.h one level up. It seems the folder
  include/dm/vpci is not necessary.
- This patch only moves code around, and doesn't make any logical
  changes. Besides removes the static keyword from pci_pdev_read_cfg()
  and pci_pdev_write_cfg()

Tracked-On: #1568
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Reviewed-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/Makefile

@@ -100,7 +100,6 @@ INCLUDE_PATH += include/arch/x86/guest
 INCLUDE_PATH += include/debug
 INCLUDE_PATH += include/public
 ifeq ($(CONFIG_PARTITION_MODE),y)
-INCLUDE_PATH += include/dm/vpci
 INCLUDE_PATH += include/dm
 endif
 INCLUDE_PATH += bsp/include
@@ -183,6 +182,7 @@ C_SRCS += dm/vioapic.c
 ifeq ($(CONFIG_PARTITION_MODE),y)
 C_SRCS += $(wildcard dm/vpci/*.c)
 C_SRCS += $(wildcard partition/*.c)
+C_SRCS += dm/hw/pci.c
 C_SRCS += dm/vrtc.c
 endif