maintainers: claim responsibility for timer library
maintainers: claim responsibility for timer library

Add myself as co-maintainer for the timer library.

Signed-off-by: Erik Gabriel Carrillo <e875827104151a044027635d030c91d145f99619@intel.com>
Acked-by: Robert Sanford <78c116265a050e72ac1de5fd18bc071730d7dd67@akamai.com>
Acked-by: Thomas Monjalon <5f50a84c1fa3bcff146405017f36aec1a10a9e38@monjalon.net>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk