[BOOT:LIB] More work on efiinit.c

EfiInitpCreateApplicationEntry() is almost complete.

BOOT/ENVIRON/INC/bootmgr.h

@@ -235,7 +235,8 @@ typedef struct {
 } BOOT_DEVICE, *PBOOT_DEVICE;
 
 typedef enum {
-    BCDE_DATA_TYPE_APPLICATION_DEVICE = 0x11000001
+    BCDE_DATA_TYPE_APPLICATION_DEVICE = 0x11000001,
+    BCDE_DATA_TYPE_APPLICATION_PATH   = 0x22000002
 } BCDE_DATA_TYPE;
 
 typedef struct {