refactor(st-drivers): do not rely on DT in etzpc_init

The ETZPC peripheral is always secure, and has a fixed address,
given by STM32MP1_ETZPC_BASE. This is then not needed to check
that in DT.

Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: Ifb0779abaf830e1e5a469c72181c2b2726fb47b5
diff --git a/drivers/st/etzpc/etzpc.c b/drivers/st/etzpc/etzpc.c
index ff52a22..4c3c26d 100644
--- a/drivers/st/etzpc/etzpc.c
+++ b/drivers/st/etzpc/etzpc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2020, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2017-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -225,20 +225,8 @@
 int etzpc_init(void)
 {
 	uint32_t hwcfg;
-	int node;
-	struct dt_node_info etzpc_info;
-
-	node = dt_get_node(&etzpc_info, -1, ETZPC_COMPAT);
-	if (node < 0) {
-		return -EIO;
-	}
-
-	/* Check ETZPC is secure only */
-	if (etzpc_info.status != DT_SECURE) {
-		return -EACCES;
-	}
 
-	etzpc_dev.base = etzpc_info.base;
+	etzpc_dev.base = STM32MP1_ETZPC_BASE;
 
 	hwcfg = mmio_read_32(etzpc_dev.base + ETZPC_HWCFGR);