Cross Reference: /external/u-boot/board/chipspark/popmetal_rk3288

`Name`	`Date`	`Size`
Up to higher level directory
`Kconfig`	22-Oct-2020	`220`
`MAINTAINERS`	22-Oct-2020	`172`
`Makefile`	22-Oct-2020	`125`
`popmetal-rk3288.c`	22-Oct-2020	`540`