drm/nouveau: don't execute INIT_GPIO unless we're really running the table

This resulted in accidently switching off the eDP panel on certain laptops
since the default state in the GPIO table was off.

Fixes rh#582621
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_bios.c

@@ -2807,7 +2807,10 @@ init_gpio(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
 
 		BIOSLOG(bios, "0x%04X: Entry: 0x%08X\n", offset, gpio->entry);
 
-		nv50_gpio_set(bios->dev, gpio->tag, gpio->state_default);
+		BIOSLOG(bios, "0x%04X: set gpio 0x%02x, state %d\n",
+			offset, gpio->tag, gpio->state_default);
+		if (bios->execute)
+			nv50_gpio_set(bios->dev, gpio->tag, gpio->state_default);
 
 		/* The NVIDIA binary driver doesn't appear to actually do
 		 * any of this, my VBIOS does however.