treewide: use CONFIG_IS_ENABLED() for ARMV8_SEC_FIRMWARE_SUPPORT

There is SPL_ARMV8_SEC_FIRMWARE_SUPPORT and ARMV8_SEC_FIRMWARE_SUPPORT.
Thus use CONFIG_IS_ENABLED() instead of the simple #ifdef.

Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/lib/psci-dt.c b/arch/arm/lib/psci-dt.c
index 0ed29a4..903b335 100644
--- a/arch/arm/lib/psci-dt.c
+++ b/arch/arm/lib/psci-dt.c
@@ -10,7 +10,7 @@
 #include <linux/sizes.h>
 #include <linux/kernel.h>
 #include <asm/psci.h>
-#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
+#if CONFIG_IS_ENABLED(ARMV8_SEC_FIRMWARE_SUPPORT)
 #include <asm/armv8/sec_firmware.h>
 #endif
 
@@ -64,7 +64,7 @@
 		return nodeoff;
 
 init_psci_node:
-#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
+#if CONFIG_IS_ENABLED(ARMV8_SEC_FIRMWARE_SUPPORT)
 	psci_ver = sec_firmware_support_psci_version();
 #elif defined(CONFIG_ARMV7_PSCI_1_0) || defined(CONFIG_ARMV8_PSCI)
 	psci_ver = ARM_PSCI_VER_1_0;
@@ -85,7 +85,7 @@
 			return tmp;
 	}
 
-#ifndef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
+#if !CONFIG_IS_ENABLED(ARMV8_SEC_FIRMWARE_SUPPORT)
 	/*
 	 * The Secure firmware framework isn't able to support PSCI version 0.1.
 	 */