generator: Mark QNX c_void types as opaque to get raw pointers

Long ago in #339 I added "opaque" types to ensure that pointers to it
stay as pointers in FFI rather than get converted to `&mut` borrows
which don't carry the load of an arbitrary pointer value to "something
unknown" (= opaque).  When the QNX types were added in #429 and #760
some time later, they weren't added to this list and turned into borrows
making them impossible to be handled safely in user code.

Author: MarijnS95

ash/src/vk/definitions.rs

@@ -9264,12 +9264,12 @@ impl<'a> ScreenSurfaceCreateInfoQNX<'a> {
         self
     }
     #[inline]
-    pub fn context(mut self, context: &'a mut _screen_context) -> Self {
+    pub fn context(mut self, context: *mut _screen_context) -> Self {
         self.context = context;
         self
     }
     #[inline]
-    pub fn window(mut self, window: &'a mut _screen_window) -> Self {
+    pub fn window(mut self, window: *mut _screen_window) -> Self {
         self.window = window;
         self
     }
@@ -56278,7 +56278,7 @@ unsafe impl<'a> TaggedStructure for ImportScreenBufferInfoQNX<'a> {
 unsafe impl ExtendsMemoryAllocateInfo for ImportScreenBufferInfoQNX<'_> {}
 impl<'a> ImportScreenBufferInfoQNX<'a> {
     #[inline]
-    pub fn buffer(mut self, buffer: &'a mut _screen_buffer) -> Self {
+    pub fn buffer(mut self, buffer: *mut _screen_buffer) -> Self {
         self.buffer = buffer;
         self
     }

generator/src/lib.rs

@@ -290,6 +290,9 @@ fn is_opaque_type(ty: &str) -> bool {
             | "CAMetalLayer"
             | "IDirectFB"
             | "IDirectFBSurface"
+            | "_screen_buffer"
+            | "_screen_context"
+            | "_screen_window"
     )
 }