qca: Modified board spcific Makefile to support CONFIG_ENV_IS_NOWHERE.

Modified board Makefile to avoid compilation of env.c when
"CONFIG_ENV_IS_NOWHERE" is enabled.

Change-Id: Ie694276c9071ad17f378a9926d78aa5a6e39a449
Signed-off-by: Aditya Kumar Patra S <apatr@codeaurora.org>
2 files changed