[uboot] porting cvitek asic chips:

1. add cvitek folders to u-boot-2021.10
	2. add cv183x/cv182x part
	3. add cv181x/cv180x part

Change-Id: I6dc2e5ff509dbab16bd60bfb3fd61852da5e01f6

u-boot-2021.10/arch/arm/include/asm/u-boot-arm.h

@@ -36,6 +36,7 @@ int	arch_misc_init(void);
 
 /* board/.../... */
 int	board_init(void);
+void	board_save_time_record(uintptr_t saveaddr);
 
 /* calls to c from vectors.S */
 struct pt_regs;