stm32mp1: Fix warning display when 1.5A power supply is used

On DK1/2 board, when a 1.5A power supply is detected, a warning
message is displayed. In this message, "1.5mA" is displayed instead
of "1.5A".

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index dcbfcc1..33cb7f6 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -431,7 +431,7 @@
 	if (max_uV > USB_WARNING_LOW_THRESHOLD_UV &&
 	    max_uV <= USB_START_LOW_THRESHOLD_UV &&
 	    min_uV <= USB_LOW_THRESHOLD_UV) {
-		pr_err("*       WARNING 1.5mA power supply detected        *\n");
+		pr_err("*       WARNING 1.5A power supply detected        *\n");
 		nb_blink = 3;
 	}