emulators/open-vm-kmod: unbreak build on recent -CURRENT after 797020a76406a8e7a4afbd3706884b58a6e4b4ec (+)

In commit 797020a76406a8e7a4afbd3706884b58a6e4b4ec vm_page_lock() was retired
and only one compat shim now is available -- vm_page_tryxbusy() as
it used in linux compatibility layer.

Adjust code by redefine macros under __FreeBSD_version check

PR:		287811
Approved by:	garga

emulators/open-vm-kmod/files/patch-vmmemctl_os.c

@@ -1,6 +1,22 @@
---- vmmemctl/os.c.orig	2024-10-10 15:05:07 UTC
+--- vmmemctl/os.c.orig	2025-05-15 19:16:07 UTC
 +++ vmmemctl/os.c
-@@ -103,7 +103,11 @@ MALLOC_DEFINE(M_VMMEMCTL, BALLOON_NAME, "vmmemctl meta
+@@ -91,8 +91,13 @@ MALLOC_DEFINE(M_VMMEMCTL, BALLOON_NAME, "vmmemctl meta
+ /*
+  * FreeBSD specific MACROS
+  */
+-#define VM_PAGE_LOCK(page) vm_page_lock(page);
+-#define VM_PAGE_UNLOCK(page) vm_page_unlock(page)
++#if __FreeBSD_version < 1500046
++#define VM_PAGE_LOCK(page) vm_page_tryxbusy(page);
++#define VM_PAGE_UNLOCK(page) vm_page_xunbusy(page)
++#else
++#define VM_PAGE_LOCK(page) vm_page_tryxbusy(page);
++#define VM_PAGE_UNLOCK(page) vm_page_xunbusy(page)
++#endif
+ 
+ #define VM_OBJ_LOCK(object) VM_OBJECT_WLOCK(object)
+ #define VM_OBJ_UNLOCK(object) VM_OBJECT_WUNLOCK(object);
+@@ -103,7 +108,11 @@ MALLOC_DEFINE(M_VMMEMCTL, BALLOON_NAME, "vmmemctl meta
  #define KVA_FREE(offset, size) kva_free(offset, size)
  
  #define KMEM_ALLOC(size) kmem_malloc(size, M_WAITOK | M_ZERO)
@@ -13,7 +29,7 @@
  
  /*
   * Globals
-@@ -404,7 +408,7 @@ os_pmap_free(os_pmap *p) // IN
+@@ -404,7 +413,7 @@ os_pmap_free(os_pmap *p) // IN
  static void
  os_pmap_free(os_pmap *p) // IN
  {