Revert "drm/i915: assume all GM45 Acer laptops use inverted backlight PWM"

My Acer 8510TZ stops displaying anything when X starts with Linus' current
tree. I bisected it down to commit ee1452d7.

This patch reverts commit ee1452d7.

After the revert, everything works as before.
Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Reported-by: Dylan Borg <borgdylan@hotmail.com> (for a Acer Extensa 5635Z)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_display.c

@@ -10541,11 +10541,20 @@ static struct intel_quirk intel_quirks[] = {
 	/* Sony Vaio Y cannot use SSC on LVDS */
 	{ 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
 
-	/*
-	 * All GM45 Acer (and its brands eMachines and Packard Bell) laptops
-	 * seem to use inverted backlight PWM.
-	 */
-	{ 0x2a42, 0x1025, PCI_ANY_ID, quirk_invert_brightness },
+	/* Acer Aspire 5734Z must invert backlight brightness */
+	{ 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
+
+	/* Acer/eMachines G725 */
+	{ 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
+
+	/* Acer/eMachines e725 */
+	{ 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
+
+	/* Acer/Packard Bell NCL20 */
+	{ 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
+
+	/* Acer Aspire 4736Z */
+	{ 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
 
 	/* Dell XPS13 HD Sandy Bridge */
 	{ 0x0116, 0x1028, 0x052e, quirk_no_pcm_pwm_enable },