[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/include/phy.h

@@ -519,6 +519,7 @@ int phy_atheros_init(void);
 int phy_broadcom_init(void);
 int phy_cortina_init(void);
 int phy_cortina_access_init(void);
+int phy_cv182xa_init(void);
 int phy_davicom_init(void);
 int phy_et1011c_init(void);
 int phy_lxt_init(void);