crypto: sl3516 - Fix build warning without CONFIG_PM

drivers/crypto/gemini/sl3516-ce-core.c:345:12:
 warning: ‘sl3516_ce_pm_resume’ defined but not used [-Wunused-function]
 static int sl3516_ce_pm_resume(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~

The driver needs PM, otherwise clock and resets are never set.
So make it depends on PM to fix this warning.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Suggested-by: LABBE Corentin <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/Kconfig

@@ -273,6 +273,7 @@ config CRYPTO_DEV_SL3516
 	select CRYPTO_ECB
 	select CRYPTO_AES
 	select HW_RANDOM
+	depends on PM
 	help
 	  This option allows you to have support for SL3516 crypto offloader.