drm/qxl: User page size macro for qxl release bo

Some architectures have different default page size, this patch
replaces hardcoded 4096 with PAGE_SIZE macro, since cmd bo size
is page aligned.
Signed-off-by: bibo mao <maobibo@loongson.cn>
Link: http://patchwork.freedesktop.org/patch/msgid/20210914062352.6102-1-maobibo@loongson.cnSigned-off-by: Gerd Hoffmann <kraxel@redhat.com>

drivers/gpu/drm/qxl/qxl_release.c

@@ -36,10 +36,10 @@
 /* manage releaseables */
 /* stack them 16 high for now -drawable object is 191 */
 #define RELEASE_SIZE 256
-#define RELEASES_PER_BO (4096 / RELEASE_SIZE)
+#define RELEASES_PER_BO (PAGE_SIZE / RELEASE_SIZE)
 /* put an alloc/dealloc surface cmd into one bo and round up to 128 */
 #define SURFACE_RELEASE_SIZE 128
-#define SURFACE_RELEASES_PER_BO (4096 / SURFACE_RELEASE_SIZE)
+#define SURFACE_RELEASES_PER_BO (PAGE_SIZE / SURFACE_RELEASE_SIZE)
 
 static const int release_size_per_bo[] = { RELEASE_SIZE, SURFACE_RELEASE_SIZE, RELEASE_SIZE };
 static const int releases_per_bo[] = { RELEASES_PER_BO, SURFACE_RELEASES_PER_BO, RELEASES_PER_BO };