remove lspci, gbe_bin_genenrater would generator llvm binary by default.

remove lspci, gbe_bin_genenrater would generator llvm binary by default.

driver can get chipset id by ioctl instead of calling lspci in cmake;
user could generator gen binary by configuring cmake option
-DGEN_PCI_ID=xxxx or calling the gbe_bin_generater with option -t
GEN_PCI_ID.

v2: add "\0GENC" magic code for gen binary, fix typo.

Signed-off-by: Luo <xionghu.luo@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>