drm/i915: Initialize num_scalers for skl and glk too

After commit 1c74eeaf ("drm/i915: Move number of scalers initialization to
runtime init"), scalers are not initialized properly for skl and glk
since num_scalers is left as 0 for those platforms.

Fixes: 1c74eeaf ("drm/i915: Move number of scalers initialization to runtime init")
Cc: Nabendu Maiti <nabendu.bikash.maiti@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk> (v2)
Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Signed-off-by: NAnder Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Tested-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1483365281-10569-1-git-send-email-ander.conselvan.de.oliveira@intel.com

drivers/gpu/drm/i915/intel_device_info.c

@@ -310,6 +310,12 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
 	struct intel_device_info *info = mkwrite_device_info(dev_priv);
 	enum pipe pipe;
 
+	if (INTEL_GEN(dev_priv) >= 9) {
+		info->num_scalers[PIPE_A] = 2;
+		info->num_scalers[PIPE_B] = 2;
+		info->num_scalers[PIPE_C] = 1;
+	}
+
 	/*
 	 * Skylake and Broxton currently don't expose the topmost plane as its
 	 * use is exclusive with the legacy cursor and we only want to expose
@@ -325,9 +331,6 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
 		info->num_sprites[PIPE_A] = 2;
 		info->num_sprites[PIPE_B] = 2;
 		info->num_sprites[PIPE_C] = 1;
-		info->num_scalers[PIPE_A] = 2;
-		info->num_scalers[PIPE_B] = 2;
-		info->num_scalers[PIPE_C] = 1;
 	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		for_each_pipe(dev_priv, pipe)
 			info->num_sprites[pipe] = 2;