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 new symbol to refer to any 'SPL' build, including TPL and VPL

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

Perform simple renames of:
   CONFIG_VSC7385_IMAGE to CFG_VSC7385_IMAGE
   CONFIG_VSC7385_IMAGE_SIZE to CFG_VSC7385_IMAGE_SIZE

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

Perform a simple rename of CONFIG_SLIC to CFG_SLIC

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

Perform a simple rename of CONFIG_RESET_VECTOR_ADDRESS to CFG_RESET_VECTOR_ADDRESS

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

Perform a simple rename of CONFIG_FLASH_OR_PRELIM to CFG_FLASH_OR_PRELIM

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

Perform a simple rename of CONFIG_FLASH_BR_PRELIM to CFG_FLASH_BR_PRELIM

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

Perform a simple rename of CONFIG_EXTRA_ENV_SETTINGS to CFG_EXTRA_ENV_SETTINGS

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

We have a number of places that undef CONFIG_... while we never
reference CONFIG_... in the first place. Remove these lines.

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

This converts the following to Kconfig:
   CONFIG_L2_CACHE

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