misc: sram: remove useless #ifdef

A recent patch added a new function that is now unused whenever
CONFIG_OF is disabled:

drivers/misc/sram.c:342:12: error: 'atmel_securam_wait' defined but not used [-Werror=unused-function]

There is actually no reason for the #ifdef, because the driver
currently cannot be used in a meaningful way without CONFIG_OF,
and there is no compile-time dependency.

Removing that #ifdef and the respective of_match_ptr() avoids the
warning and simplifies the driver slightly.

Fixes: 2ae2e28852f2 ("misc: sram: add Atmel securam support")
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/misc/sram.c

@@ -353,13 +353,11 @@ static int atmel_securam_wait(void)
 					10000, 500000);
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id sram_dt_ids[] = {
 	{ .compatible = "mmio-sram" },
 	{ .compatible = "atmel,sama5d2-securam", .data = atmel_securam_wait },
 	{}
 };
-#endif
 
 static int sram_probe(struct platform_device *pdev)
 {
@@ -443,7 +441,7 @@ static int sram_remove(struct platform_device *pdev)
 static struct platform_driver sram_driver = {
 	.driver = {
 		.name = "sram",
-		.of_match_table = of_match_ptr(sram_dt_ids),
+		.of_match_table = sram_dt_ids,
 	},
 	.probe = sram_probe,
 	.remove = sram_remove,