Migrate the few ARM Layerscape platforms that had not been switched
along with all remaining PowerPC platforms to DM_SERIAL. For PowerPC,
this means that platforms which use SPL/TPL, keeping the non-DM serial
driver enabled there as they do not use DM. We also rework the guards
on how to define CFG_SYS_NS16550_CLK so that this is mostly in one place
now.

Signed-off-by: Tom Rini <trini@konsulko.com>

Use the CONFIG_IS_ENABLED() macro when checking for DM_SERIAL so that
CFG_SYS_NS16550_CLK is not defined as get_serial_clock() in SPL if SPL
does not have DM_SERIAL enabled.

Signed-off-by: Marek Mojík <marek.mojik@nic.cz>
Reviewed-by: Marek Behún <kabel@kernel.org>

Perform a simple rename of CONFIG_MAX_MEM_MAPPED to CFG_MAX_MEM_MAPPED

Signed-off-by: Tom Rini <trini@konsulko.com>

This converts the following to Kconfig:
   CONFIG_FSL_LBC

Signed-off-by: Tom Rini <trini@konsulko.com>

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_NS16550
namespace do not easily transition to Kconfig. In many cases they likely
should come from the device tree instead. Move these out of CONFIG
namespace and in to CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

This converts the following to Kconfig:
   CONFIG_SYS_BOOT_RAMDISK_HIGH

Signed-off-by: Tom Rini <trini@konsulko.com>

This is only used in one file, and is never overridden.  Move this out
of CONFIG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>

CONFIG_SYS_ATA_PORT_ADDR is not used in the code anymore. Drop it and use
ATA_PORT_ADDR() locally instead.

Drop CONFIG_IDE_RESET_ROUTINE and CONFIG_IDE_SWAP_IO which are also
unused.

Signed-off-by: Simon Glass <sjg@chromium.org>

- Guard most of the options in drivers/ddr/fsl/Kconfig with
  SYS_FSL_DDR || SYS_FSL_MMDC.
- Migrate FSL_DMA, DDR_ECC, DDR_ECC_CMD, and ECC_INIT_VIA_DDRCONTROLLER
  to Kconfig.
- Clean up the logic for including the DDR_ECC_CMD code.

Signed-off-by: Tom Rini <trini@konsulko.com>

These symbols are now either unused or were only used within the config
file to determine other logic, which could be done in a way that doesn't
further pollute the CONFIG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>