drm/i915/csr: alpha_support doesn't depend on csr or vice versa

Debug logging should not be dependent on alpha support flag.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190429142253.15882-1-jani.nikula@intel.com

drivers/gpu/drm/i915/intel_csr.c

@@ -529,8 +529,6 @@ void intel_csr_ucode_init(struct drm_i915_private *dev_priv)
 
 	if (csr->fw_path == NULL) {
 		DRM_DEBUG_KMS("No known CSR firmware for platform, disabling runtime PM\n");
-		WARN_ON(!IS_ALPHA_SUPPORT(INTEL_INFO(dev_priv)));
-
 		return;
 	}