external-toolchain: allow override of linux-libc-headers provider
authorBen Gardiner <bengardiner@nanometrics.ca>
Wed, 2 Mar 2011 15:05:13 +0000 (10:05 -0500)
committerTom Rini <tom_rini@mentor.com>
Wed, 2 Mar 2011 16:46:45 +0000 (09:46 -0700)
commit829ea5110bc82f71a225f168bcb6a9a327b1b5c8
tree09fb88bcd622edd07ace4028241215b615ce893b
parent59c3f3a5fb2e9a80becb3f3525a652b15571bd9d
external-toolchain: allow override of linux-libc-headers provider

only set PREFERRED_PROVIDER_linux-libc-headers if it is not
already assigned a value.

Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
Tested-by: Andrea Galbusera <gizero@gmail.com>
Signed-off-by: Tom Rini <tom_rini@mentor.com>
conf/distro/include/toolchain-external.inc