soc/broadcom/cygnus: Update DDR Kconfig

The DDR speed Kconfig symbols needed to either be added to the Kconfig
tree, or have the code associated with them removed.  I chose to add
the symbols.

- Add symbols for DDR333 - DDR667 to cygnus Kconfig.  These should be
selected by the mainboard.
- Rename symbols from DDRXXX to CYGNUS_DDRXXX to match the existing
CYGNUS_DDR800 symbol.
- Rename the non Kconfig #define CONFIG_DRAM_FREQ to CYGNUS_DRAM_FREQ
because having other #defines look like Kconfig symbols is confusing.
- Change #ifdef CONFIG_DDRXXX to use IS_ENABLED

Change-Id: I3f5957a595072434c21af0002d57ac49b48b1e43
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/17386
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>

0 files changed, 0 insertions, 0 deletions