enable http boot for hikey uefi

Hikey.dsc.patch

diff --git a/Platforms/Hisilicon/HiKey/HiKey.dsc b/Platforms/Hisilicon/HiKey/HiKey.dsc
index 3b99cf5..621e383 100644
--- a/Platforms/Hisilicon/HiKey/HiKey.dsc
+++ b/Platforms/Hisilicon/HiKey/HiKey.dsc
@@ -25,6 +25,7 @@
   BUILD_TARGETS                  = DEBUG|RELEASE
   SKUID_IDENTIFIER               = DEFAULT
   FLASH_DEFINITION               = OpenPlatformPkg/Platforms/Hisilicon/HiKey/HiKey.fdf
+  DEFINE HTTP_BOOT_ENABLE        = TRUE
 
 [LibraryClasses.common]
 !if $(TARGET) == RELEASE
@@ -128,6 +129,11 @@
   # Add support for GCC stack protector
   NULL|MdePkg/Library/BaseStackCheckLib/BaseStackCheckLib.inf
 
+  # Add support for HTTP BOOT
+  !if $(HTTP_BOOT_ENABLE) == TRUE
+    HttpLib|MdeModulePkg/Library/DxeHttpLib/DxeHttpLib.inf
+  !endif
+
 [LibraryClasses.common.SEC]
   PrePiLib|EmbeddedPkg/Library/PrePiLib/PrePiLib.inf
   ExtractGuidedSectionLib|EmbeddedPkg/Library/PrePiExtractGuidedSectionLib/PrePiExtractGuidedSectionLib.inf
@@ -362,6 +368,14 @@
 
   gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut|1
 
+  #
+  # HTTP BOOT
+  #
+  !if $(HTTP_BOOT_ENABLE) == TRUE
+    # HTTP(not HTTPS) BOOT enable
+    gEfiNetworkPkgTokenSpaceGuid.PcdAllowHttpConnections|TRUE
+  !endif
+
 ################################################################################
 #
 # Components Section - list of all EDK II Modules needed by this Platform
@@ -479,6 +493,13 @@
   MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Dxe.inf
   MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxeBcDxe.inf
 
+!if $(HTTP_BOOT_ENABLE) == TRUE
+  NetworkPkg/DnsDxe/DnsDxe.inf
+  NetworkPkg/HttpUtilitiesDxe/HttpUtilitiesDxe.inf
+  NetworkPkg/HttpDxe/HttpDxe.inf
+  NetworkPkg/HttpBootDxe/HttpBootDxe.inf
+!endif
+
   #
   # AX88772 Ethernet Driver
   #