drm/i915: make intel_crtc_fb_gamma_{set, get} static

By moving them to intel_fb.c.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index 7ceb69b..d883b77 100644
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -184,6 +184,27 @@
 	return ret;
 }
 
+/** Sets the color ramps on behalf of RandR */
+static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
+				    u16 blue, int regno)
+{
+	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+	intel_crtc->lut_r[regno] = red >> 8;
+	intel_crtc->lut_g[regno] = green >> 8;
+	intel_crtc->lut_b[regno] = blue >> 8;
+}
+
+static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
+				    u16 *blue, int regno)
+{
+	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+	*red = intel_crtc->lut_r[regno] << 8;
+	*green = intel_crtc->lut_g[regno] << 8;
+	*blue = intel_crtc->lut_b[regno] << 8;
+}
+
 static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
 	.gamma_set = intel_crtc_fb_gamma_set,
 	.gamma_get = intel_crtc_fb_gamma_get,