intel/clc: enable fp16 & subgroups for GRL

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <!17253>
191 jobs for !17253 with review/clc-features-llvm-14 in 48 minutes and 57 seconds (queued for 13 seconds)
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