[oe] pcmciautils: fix build to use flex from sysroots, not from host

[Khem Raj]

Hi

This commit 

commit c65ee13298e8c22274b5bcabe06f2116b8b7ebf2
Author:     Dmitry Eremin-Solenikov <dbaryshkov at gmail.com>
AuthorDate: Fri Jun 4 16:26:17 2010 +0400
Commit:     Dmitry Eremin-Solenikov <dbaryshkov at gmail.com>
CommitDate: Fri Jun 4 16:44:18 2010 +0400

    pcmciautils: fix build to use flex from sysroots, not from host
    
    Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov at gmail.com>


breaks the build when I have flex-native in ASSUME_PROVIDED.
It there any specific reason why one should use flex from hosted sysroot ?
is the flex package on all distribution broken for some reason ?

Thanks
-Khem