stm32mp1: update device tree and gpio functions

Change fdt_check_status function to fdt_get_status.
Update GPIO defines.
Move some functions in gpio driver, instead of dt helper file.
Add GPIO bank helper functions.
Use only one status field in dt_node_info structure including both status
and secure status.

Change-Id: I34f93408dd4aac16ae722f564bc3f7d6ae978cf4
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
diff --git a/plat/st/stm32mp1/sp_min/sp_min_setup.c b/plat/st/stm32mp1/sp_min/sp_min_setup.c
index bff45f6..a0bdbf6 100644
--- a/plat/st/stm32mp1/sp_min/sp_min_setup.c
+++ b/plat/st/stm32mp1/sp_min/sp_min_setup.c
@@ -117,7 +117,7 @@
 
 	result = dt_get_stdout_uart_info(&dt_uart_info);
 
-	if ((result > 0) && dt_uart_info.status) {
+	if ((result > 0) && (dt_uart_info.status != 0U)) {
 		if (console_stm32_register(dt_uart_info.base, 0,
 					   STM32MP1_UART_BAUDRATE, &console) ==
 		    0) {