Convert CONFIG_SYS_NONCACHED_MEMORY to Kconfig

Convert CONFIG_SYS_NONCACHED_MEMORY to Kconfig

This converts the following to Kconfig:
   CONFIG_SYS_NONCACHED_MEMORY

To do this we introduce CONFIG_SYS_HAS_NONCACHED_MEMORY as a bool to
gate if we are going to have noncached_... functions available and then
continue to use CONFIG_SYS_NONCACHED_MEMORY to store the size of said
cache. We make this new option depend on both the architectures which
implement support and the drivers which make use of it.

Cc: Tom Warren <[email protected]>
Cc: Mingming lee <[email protected]>
Cc: "Ying-Chun Liu (PaulLiu)" <[email protected]>
Cc: Alban Bedel <[email protected]>
Cc: Stephen Warren <[email protected]>
Cc: Marcel Ziswiler <[email protected]>
Cc: Allen Martin <[email protected]>
Signed-off-by: Tom Rini <[email protected]>
Reviewed-by: Simon Glass <[email protected]>