radeonsi: Allow longer intrinsic names
radeonsi: Allow longer intrinsic names

Fixes a boat load of Piglit tests for me, which crashed like fdo#70913
before.

Thanks to Michel Dänzer for the tip.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70913
Signed-off-by: Kai Wasserbäch <31ea678c44dc4e8e22ccfd165592dd71a30e46ae@dev.carbon-project.org>
Reviewed-by: Tom Stellard <85590917cb30a670bf23f5b4273617f8815d1e87@amd.com>

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