poky-eglibc.inc: fix multiple providers for virtual/libc-nativesdk and other
This commit fixes the following error while doing this:
bitbake poky-image-minimal
NOTE: multiple providers are available for virtual/libc-nativesdk (glibc-nativesdk, eglibc-nativesdk)
NOTE: consider defining a PREFERRED_PROVIDER entry to match virtual/libc-nativesdk
NOTE: multiple providers are available for virtual/i586-pokysdk-linux-libc-initial-nativesdk (glibc-initial-nativesdk, eglibc-initial-nativesdk)
NOTE: consider defining a PREFERRED_PROVIDER entry to match virtual/i586-pokysdk-linux-libc-initial-nativesdk
