drm: simpledrm: fix wrong unit with pixel clock

Pixel clock has to be set in kHz.

Signed-off-by: Alejandro Concepcion-Rodriguez <[e-mail]>
Fixes: 11e8f5fd223b ("drm: Add simpledrm driver")
Signed-off-by: Thomas Zimmermann <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/tiny/simpledrm.c

···
 {
 	struct drm_display_mode mode = { SIMPLEDRM_MODE(width, height) };
 
-	mode.clock = 60 /* Hz */ * mode.hdisplay * mode.vdisplay;
+	mode.clock = mode.hdisplay * mode.vdisplay * 60 / 1000 /* kHz */;
 	drm_mode_set_name(&mode);
 
 	return mode;