MAINTAINERS: Add rcy@google.com as maintainer for drivers/staging/gasket

After consultation with Todd Poynor and Jesse Barnes, I am
adding myself as a maintainer for drivers/staging/gasket

Signed-off-by: Richard C Yeh <rcy@google.com>
Acked-by: Todd Poynor <toddpoynor@google.com>
Link: https://lore.kernel.org/r/20200423191504.149922-1-rcy@google.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>