arm: am335x: add Kconfig range attribute to prevent invalid CONS_INDEX
The help message in board/ti/am335x/Kconfig says AM335x has
6 UARTs, so the valid number for CONFIG_CONS_INDEX is from 1 to 6.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Tom Rini <trini@ti.com>
diff --git a/board/ti/am335x/Kconfig b/board/ti/am335x/Kconfig
index 0e5149c..80701f5 100644
--- a/board/ti/am335x/Kconfig
+++ b/board/ti/am335x/Kconfig
@@ -22,6 +22,7 @@
config CONS_INDEX
int "UART used for console"
+ range 1 6
default 1
help
The AM335x SoC has a total of 6 UARTs (UART0 to UART5 as referenced