meson: Add egl.cpp to sources alongside debayer_egl.cpp

There are no other users of `egl.cpp`, so simplify by adding it to the
sources array at the same time.

Signed-off-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Bryan O'Donoghue <bod.linux@nxsw.ie>

src/libcamera/meson.build

@@ -75,9 +75,6 @@ libegl = dependency('egl', required : false)
 libglesv2 = dependency('glesv2', required : false)
 
 if mesa_works
-    libcamera_internal_sources += files([
-        'egl.cpp',
-    ])
     gles_headless_enabled = true
 else
     gles_headless_enabled = false

src/libcamera/software_isp/meson.build

@@ -19,6 +19,7 @@ libcamera_internal_sources += files([
 if softisp_enabled and gles_headless_enabled
     config_h.set('HAVE_DEBAYER_EGL', 1)
     libcamera_internal_sources += files([
+        '../egl.cpp',
         'debayer_egl.cpp',
     ])
 endif