patch 9.1.1485: missing Wayland clipboard support

Problem:  missing Wayland clipboard support
Solution: make it work (Foxe Chen)

fixes: #5157
closes: #17097

Signed-off-by: Foxe Chen <chen.foxe@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/option.h b/src/option.h
index 740f6ee..4ed117c 100644
--- a/src/option.h
+++ b/src/option.h
@@ -504,6 +504,7 @@
 EXTERN long	p_cwh;		// 'cmdwinheight'
 #ifdef FEAT_CLIPBOARD
 EXTERN char_u	*p_cb;		// 'clipboard'
+EXTERN char_u	*p_cpm;		// 'clipmethod'
 #endif
 EXTERN long	p_ch;		// 'cmdheight'
 #ifdef FEAT_FOLDING
@@ -1132,6 +1133,13 @@
 EXTERN long	p_wmh;		// 'winminheight'
 EXTERN long	p_wmw;		// 'winminwidth'
 EXTERN long	p_wiw;		// 'winwidth'
+#ifdef FEAT_WAYLAND
+EXTERN char_u	*p_wse;		// 'wlseat'
+# ifdef FEAT_WAYLAND_CLIPBOARD
+EXTERN int	p_wst;		// 'wlsteal'
+# endif
+EXTERN long     p_wtm;		// 'wltimeoutlen'
+#endif
 #if defined(MSWIN) && defined(FEAT_TERMINAL)
 EXTERN char_u	*p_winptydll;	// 'winptydll'
 #endif