Updating Meson build Wayland conditional to match Makefile

Summary:
The conditional logic is flawed.
If `HAVE_WAYLAND` is true, only then should the path be updated to include wayland-sessions.

Test Plan: Verified desired output in build/meson-info/intro-installed.json after testing a clean build

Reviewers: devilhorns

Subscribers: cedric, zmike

Tags: #enlightenment-git

Differential Revision: https://phab.enlightenment.org/D9868

data/session/meson.build

@@ -6,12 +6,12 @@ e_desktop = configure_file(input        : 'enlightenment.desktop.in',
                configuration: desktop_config
               )
 
-if config_h.has('HAVE_WAYLAND_ONLY') == false
+if config_h.has('HAVE_WAYLAND') == true
 	install_data(e_desktop,
-		install_dir  : join_paths(dir_data, 'xsessions'))
+		install_dir  : join_paths(dir_data, 'wayland-sessions'))
 endif
 
-if config_h.has('HAVE_WAYLAND') == false
+if config_h.has('HAVE_WAYLAND_ONLY') == false
 	install_data(e_desktop,
-		install_dir  : join_paths(dir_data, 'wayland-sessions'))
+		install_dir  : join_paths(dir_data, 'xsessions'))
 endif