arm: Rename STM32MP15x

CONFIG options must not use lower-case letter. Convert this and related
ones to upper case.

Signed-off-by: Simon Glass <sjg@chromium.org
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/board/st/stm32mp1/Kconfig b/board/st/stm32mp1/Kconfig
index 7d0d41b..96de415 100644
--- a/board/st/stm32mp1/Kconfig
+++ b/board/st/stm32mp1/Kconfig
@@ -1,4 +1,4 @@
-if TARGET_ST_STM32MP15x
+if TARGET_ST_STM32MP15X
 
 config SYS_BOARD
 	default "stm32mp1"
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index 8f5719c..a17c314 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -114,7 +114,7 @@
 	int fdt_compat_len;
 
 	if (IS_ENABLED(CONFIG_TFABOOT)) {
-		if (IS_ENABLED(CONFIG_STM32MP15x_STM32IMAGE))
+		if (IS_ENABLED(CONFIG_STM32MP15X_STM32IMAGE))
 			mode = "trusted - stm32image";
 		else
 			mode = "trusted";
@@ -616,7 +616,7 @@
 
 static bool board_is_stm32mp15x_dk2(void)
 {
-	if (CONFIG_IS_ENABLED(TARGET_ST_STM32MP15x) &&
+	if (CONFIG_IS_ENABLED(TARGET_ST_STM32MP15X) &&
 	    of_machine_is_compatible("st,stm32mp157c-dk2"))
 		return true;
 
@@ -625,7 +625,7 @@
 
 static bool board_is_stm32mp15x_ev1(void)
 {
-	if (CONFIG_IS_ENABLED(TARGET_ST_STM32MP15x) &&
+	if (CONFIG_IS_ENABLED(TARGET_ST_STM32MP15X) &&
 	    (of_machine_is_compatible("st,stm32mp157a-ev1") ||
 	     of_machine_is_compatible("st,stm32mp157c-ev1") ||
 	     of_machine_is_compatible("st,stm32mp157d-ev1") ||