arm: stm32mp: stm32prog: update multiplier is part-size is above SZ_1G

Set multiplier to 'G' if part->size if above SZ_1G.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
index f0e019e..353aecc 100644
--- a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
+++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
@@ -1229,7 +1229,10 @@
 	char multiplier,  type;
 
 	/* max 3 digit for sector size */
-	if (part->size > SZ_1M) {
+	if (part->size > SZ_1G) {
+		size = (u32)(part->size / SZ_1G);
+		multiplier = 'G';
+	} else if (part->size > SZ_1M) {
 		size = (u32)(part->size / SZ_1M);
 		multiplier = 'M';
 	} else if (part->size > SZ_1K) {