[PATCH 3/7] gpio: ppc44x: Set GPIO chip firmware node

[Rosen Penev <rosenp@gmail.com>]

The PPC4xx GPIO driver stopped assigning an explicit firmware node
to the gpio_chip when it moved away from of_mm_gpiochip_add_data().

Restore that association from the platform device so OF GPIO lookup
can match phandles to the registered gpiochip.

Tested on: Cisco MX60W. No more probe deferral.

Assisted-by: Codex:GPT-5.5
Fixes: 1044dbaf2a77 ("powerpc/44x: Change GPIO driver to a proper platform driver")
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/gpio/gpio-ppc44x.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpio/gpio-ppc44x.c b/drivers/gpio/gpio-ppc44x.c
index 0d2244272e32..07b699cc4dd9 100644
--- a/drivers/gpio/gpio-ppc44x.c
+++ b/drivers/gpio/gpio-ppc44x.c
@@ -169,6 +169,8 @@ static int ppc4xx_gpio_probe(struct platform_device *ofdev)
 
 	gc = &chip->gc;
 
+	gc->parent = dev;
+	gc->fwnode = dev_fwnode(dev);
 	gc->base = -1;
 	gc->ngpio = 32;
 	gc->direction_input = ppc4xx_gpio_dir_in;
-- 
2.54.0