modprobe: switch to getopt_long for argument parsing

Add support for long options, and fit existing options to upstream
behaviors and extensions.  Fix some missing std::endl and
android::base::Join() usage.

Bug: 159424228
Bug: 151950334
Test: manually test long options work
Change-Id: Id792d87d4407628e706aeccecb6e2bce22bcad10
1 file changed