pvr: replace p_compiler.h boolean with stdbool

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <!16037>
33 jobs for !16037 with replace-boolean-with-bool in 7 minutes and 15 seconds (queued for 5 seconds)
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