cc3200: Resolve DTS fixup.

As part of the transition to Device Tree, a temporary
HAS_DTS configuration variable, and a .fixup file per board
with symbol aliases were added.

This patch removes the cc32xx related fixup file
definitions, except for those used additionally outside
the cc32xx drivers.

Since cc32xx has DTS files, and since HAS_DTS will always be true,
it also removes the 'if !HAS_DTS' blocks from the cc32xx Kconfig
files.

Change-Id: I1c1b9f734795f523342f82ab32f2a38983812c0b
Signed-off-by: Gil Pitney <gil.pitney@linaro.org>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>