power: reset: rmobile-reset: Make sysc_base2 local

The static global variable sysc_base2 is no longer used outside the
probe method and the reset handler, so it can be converted to a local
variable, and passed to the reset handler via its callback data.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/35f04935c48ae55dc562071e0a1d6fca65234a58.1708944642.git.geert+renesas@glider.beSigned-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/reset/rmobile-reset.c

@@ -19,10 +19,10 @@
 /* Reset Control Register 2 */
 #define RESCNT2_PRES	0x80000000	/* Soft power-on reset */
 
-static void __iomem *sysc_base2;
-
 static int rmobile_reset_handler(struct sys_off_data *data)
 {
+	void __iomem *sysc_base2 = (void __iomem *)data->cb_data;
+
 	/* Let's assume we have acquired the HPB semaphore */
 	writel(RESCNT2_PRES, sysc_base2 + RESCNT2);
 
@@ -31,6 +31,7 @@ static int rmobile_reset_handler(struct sys_off_data *data)
 
 static int rmobile_reset_probe(struct platform_device *pdev)
 {
+	void __iomem *sysc_base2;
 	int error;
 
 	sysc_base2 = devm_platform_ioremap_resource(pdev, 1);
@@ -41,7 +42,7 @@ static int rmobile_reset_probe(struct platform_device *pdev)
 					      SYS_OFF_MODE_RESTART,
 					      SYS_OFF_PRIO_HIGH,
 					      rmobile_reset_handler,
-					      NULL);
+					      (__force void *)sysc_base2);
 	if (error) {
 		dev_err(&pdev->dev,
 			"cannot register restart handler (err=%d)\n", error);