pinctrl: starfive: use dynamic GPIO base allocation

The JH7110 pinctrl driver currently sets a static GPIO base number from
platform data:

  sfp->gc.base = info->gc_base;

Static base assignment is deprecated and results in the following warning:

  gpio gpiochip0: Static allocation of GPIO base is deprecated,
  use dynamic allocation.

Set `sfp->gc.base = -1` to let the GPIO core dynamically allocate
the base number. This removes the warning and aligns the driver
with current GPIO guidelines.

Since the GPIO base is now allocated dynamically, remove `gc_base` field in
`struct jh7110_pinctrl_soc_info` and the associated `JH7110_SYS_GC_BASE`
and `JH7110_AON_GC_BASE` constants as they are no longer used anywhere
in the driver.

Tested on VisionFive 2 (JH7110 SoC).

Signed-off-by: Ali Tariq <alitariq45892@gmail.com>
Reviewed-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>

Author: Ali Tariq

drivers/pinctrl/starfive/pinctrl-starfive-jh7110-aon.c

@@ -29,7 +29,6 @@
 #include "pinctrl-starfive-jh7110.h"
 
 #define JH7110_AON_NGPIO		4
-#define JH7110_AON_GC_BASE		64
 
 #define JH7110_AON_REGS_NUM		37
 
@@ -138,7 +137,6 @@ static const struct jh7110_pinctrl_soc_info jh7110_aon_pinctrl_info = {
 	.pins		= jh7110_aon_pins,
 	.npins		= ARRAY_SIZE(jh7110_aon_pins),
 	.ngpios		= JH7110_AON_NGPIO,
-	.gc_base	= JH7110_AON_GC_BASE,
 	.dout_reg_base	= JH7110_AON_DOUT,
 	.dout_mask	= GENMASK(3, 0),
 	.doen_reg_base	= JH7110_AON_DOEN,

drivers/pinctrl/starfive/pinctrl-starfive-jh7110-sys.c

@@ -29,7 +29,6 @@
 #include "pinctrl-starfive-jh7110.h"
 
 #define JH7110_SYS_NGPIO		64
-#define JH7110_SYS_GC_BASE		0
 
 #define JH7110_SYS_REGS_NUM		174
 
@@ -410,7 +409,6 @@ static const struct jh7110_pinctrl_soc_info jh7110_sys_pinctrl_info = {
 	.pins		= jh7110_sys_pins,
 	.npins		= ARRAY_SIZE(jh7110_sys_pins),
 	.ngpios		= JH7110_SYS_NGPIO,
-	.gc_base	= JH7110_SYS_GC_BASE,
 	.dout_reg_base	= JH7110_SYS_DOUT,
 	.dout_mask	= GENMASK(6, 0),
 	.doen_reg_base	= JH7110_SYS_DOEN,

drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c

@@ -938,7 +938,7 @@ int jh7110_pinctrl_probe(struct platform_device *pdev)
 	sfp->gc.set = jh7110_gpio_set;
 	sfp->gc.set_config = jh7110_gpio_set_config;
 	sfp->gc.add_pin_ranges = jh7110_gpio_add_pin_ranges;
-	sfp->gc.base = info->gc_base;
+	sfp->gc.base = -1;
 	sfp->gc.ngpio = info->ngpios;
 
 	jh7110_irq_chip.name = sfp->gc.label;

drivers/pinctrl/starfive/pinctrl-starfive-jh7110.h

@@ -38,7 +38,6 @@ struct jh7110_pinctrl_soc_info {
 	const struct pinctrl_pin_desc *pins;
 	unsigned int npins;
 	unsigned int ngpios;
-	unsigned int gc_base;
 
 	/* gpio dout/doen/din/gpioinput register */
 	unsigned int dout_reg_base;