meson: Replace tabs for spaces

Tabs are disliked within the meson build system.
Replace indentation by spaces, in all existing locations.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

include/libcamera/meson.build

@@ -1,5 +1,5 @@
 public_api = [
-	'libcamera.h',
+    'libcamera.h',
 ]
 
 install_headers(public_api,

lib/meson.build

@@ -1,6 +1,6 @@
 sources = ['main.cpp']
 
 libcamera = shared_library('camera',
-			   sources,
-			   install : true,
-			   include_directories : inc)
+                           sources,
+                           install : true,
+                           include_directories : inc)

test/meson.build

@@ -1,5 +1,5 @@
 test_init = executable('test_init', 'init.cpp',
-		       link_with : libcamera,
-		       include_directories : inc)
+                       link_with : libcamera,
+                       include_directories : inc)
 
 test('Initialisation test', test_init)