Also fix the following build warning:
chip/sam_serialinit.c: In function 'sam_earlyserialinit':
chip/sam_serialinit.c:71:4: warning: implicit declaration of function 'uart_earlyserialinit'; did you mean 'sam_earlyserialinit'? [-Wimplicit-function-declaration]
71 | uart_earlyserialinit();
| ^~~~~~~~~~~~~~~~~~~~
| sam_earlyserialinit
Change-Id: I93adc5be739c222482b552b6e143e44c8c047794
Signed-off-by: liuhaitao <liuhaitao@xiaomi.com>
29be471f58