libkmod: Add support for '.' in module parameter on kcmdline
libkmod: Add support for '.' in module parameter on kcmdline

Otherwise we fail to parse arguments in kernel command line like
testmodule.testparam=1.5G

Suggested-by: Selim T. Erdogan <4ea0e69a17994cc86b92a9971224f1ec18de5ea0@alumni.cs.utexas.edu>

Distrotech/kmod,lucasdemarchi/kmod,lpereira/kmod,pmmccorm/kmod,lucasdemarchi/kmod,lpereira/kmod,pmmccorm/kmod,Distrotech/kmod,pmmccorm/kmod,lucasdemarchi/kmod,Distrotech/kmod,lpereira/kmod