ARMv8/sec-firmware: fix a compile error

When enabled sec firmware framework, but lack of definition of
the marco SEC_FIRMWARE_FIT_IMAGE, SEC_FIRMEWARE_FIT_CNF_NAME
and SEC_FIRMWARE_TARGET_EL, there will be some build errors,
so give a default definition.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
diff --git a/arch/arm/cpu/armv8/sec_firmware.c b/arch/arm/cpu/armv8/sec_firmware.c
index e21e199..2ddd67e 100644
--- a/arch/arm/cpu/armv8/sec_firmware.c
+++ b/arch/arm/cpu/armv8/sec_firmware.c
@@ -19,12 +19,22 @@
 #define SEC_FIRMWARE_LOADED	0x1
 #define SEC_FIRMWARE_RUNNING	0x2
 #define SEC_FIRMWARE_ADDR_MASK	(~0x3)
-	/*
-	 * Secure firmware load addr
-	 * Flags used: 0x1 secure firmware has been loaded to secure memory
-	 *             0x2 secure firmware is running
-	 */
-	phys_addr_t sec_firmware_addr;
+/*
+ * Secure firmware load addr
+ * Flags used: 0x1 secure firmware has been loaded to secure memory
+ *             0x2 secure firmware is running
+ */
+phys_addr_t sec_firmware_addr;
+
+#ifndef SEC_FIRMWARE_FIT_IMAGE
+#define SEC_FIRMWARE_FIT_IMAGE		"firmware"
+#endif
+#ifndef SEC_FIRMEWARE_FIT_CNF_NAME
+#define SEC_FIRMEWARE_FIT_CNF_NAME	"config@1"
+#endif
+#ifndef SEC_FIRMWARE_TARGET_EL
+#define SEC_FIRMWARE_TARGET_EL		2
+#endif
 
 static int sec_firmware_get_data(const void *sec_firmware_img,
 				const void **data, size_t *size)