[PATCHv2] powerpc/44x: Set GPIO chip parent

The PPC4xx GPIO driver stopped assigning an explicit parent
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 <redacted>
---
 arch/powerpc/platforms/44x/gpio.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/platforms/44x/gpio.c b/arch/powerpc/platforms/44x/gpio.c
index aea0d913b59d..4413a94cf7a6 100644
--- a/arch/powerpc/platforms/44x/gpio.c
+++ b/arch/powerpc/platforms/44x/gpio.c

@@ -169,6 +169,7 @@ static int ppc4xx_gpio_probe(struct platform_device *ofdev)
 
 	gc = &chip->gc;
 
+	gc->parent = dev;
 	gc->base = -1;
 	gc->ngpio = 32;
 	gc->direction_input = ppc4xx_gpio_dir_in;

-- 
2.54.0