We have seen multiple RC6 issues where it is useful to know
which global forcewake bits are set. Add this to the 'drpc'
debugfs output.

v2: Review comments (Ashutosh)
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220617212032.34577-1-vinay.belgaumkar@intel.com