libvpd: spec file cleanup
libvpd: spec file cleanup

 - Remove white space
 - Updated BuildRequires
 - Updated Source link
 - Removed AUTHORS, NEWS file from package

Signed-off-by: Vasant Hegde <a6d753843573f7bfed5075c1e875b0be8007a0ab@linux.vnet.ibm.com>
Acked-by: Suzuki K. Poulose <2d5cd350c7a48263c670a6374c5c55bca8d1a68a@in.ibm.com>

kamalesh-babulal/libvpd,jananive/libvpd,jananive/libvpd,kamalesh-babulal/libvpd,kamalesh-babulal/libvpd,jananive/libvpd