The trace-cmd Makefile forces certain variables, such as CC and AR.
It was using the host gcc and loader, fix it to use the poky-built
cross-compiler and linker.
inherit pkgconfig to ensure we don't use the host pkg-config.
Remove unecessary variables from the oemake commands, such as ARCH
and LD which aren't used by the Makefile.
Signed-off-by: Darren Hart <dvhart@linux.intel.com> CC: Tom Zanussi <tom.zanussi@intel.com>
