meson: Fix coding style when declaring arrays

The meson.build files mix array declarations with and without a space
after the opening and before the closing square bracket. The vast
majority of cases don't use spaces, so standardize on that.

While it it, fix indentation in a few places.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/ipa/raspberrypi/meson.build

@@ -54,7 +54,7 @@ if ipa_sign_module
     custom_target(ipa_name + '.so.sign',
                   input : mod,
                   output : ipa_name + '.so.sign',
-                  command : [ ipa_sign, ipa_priv_key, '@INPUT@', '@OUTPUT@' ],
+                  command : [ipa_sign, ipa_priv_key, '@INPUT@', '@OUTPUT@'],
                   install : false,
                   build_by_default : true)
 endif