These changes modify the standard kconfig tool to support NSS software
configuration. The changes also reder this tool unusable for configuring
Linux.

Change-Id: I45efcfc62c7d4c5f9ca886d25bb69cc68b2348d7
Signed-off-by: Sakthi Vignesh Radhakrishnan <sradhakr@codeaurora.org>