rockchip: migrate hardware.h inclusion into appropriate files
hardware.h is only defining macros which are "wrappers" around writel().
writel() is however not available in hardware.h, <asm/io.h> needs to be
included. This means in order to use the wrappers in hardware.h, one
also needs to include the <asm/io.h> header.
However, this cannot be done currently because hardware.h is included in
include/configs files, which are implicitly included by every code file
by default, which makes the compilation of arch/arm/cpu/armv8/u-boot.lds
fail because ALIGN (the ARM assembly directive) got redefined by some
of the include files coming from <asm.io.h>.
Because nothing in the include/configs file actually use hardware.h,
let's remove the inclusion of hardware.h from the include/configs files
and explicitly add it wherever it is required.
This prepares for the next commit where <asm/io.h> will be included in
hardware.h.