[bsp/stm32f40x] code style change

TAB to 4 space

[bsp/stm32f40x] code style change
TAB to 4 space
9d07b670 · wzyy2 · 5a7e80bd · 9d07b670 · 9d07b670 · 9d07b670
4 changed file
--- a/bsp/stm32f40x/applications/startup.c
+++ b/bsp/stm32f40x/applications/startup.c
--- a/bsp/stm32f40x/drivers/board.c
+++ b/bsp/stm32f40x/drivers/board.c
--- a/bsp/stm32f40x/drivers/serial.c
+++ b/bsp/stm32f40x/drivers/serial.c
--- a/bsp/stm32f40x/drivers/usart.c
+++ b/bsp/stm32f40x/drivers/usart.c