loader: do not print the pci id during normal operation
loader: do not print the pci id during normal operation

Spamming the pci id is not beneficial. Make sure it's printed
only when needed.

v2: Change severity to _LOADER_DEBUG, rather than removing
the message.

Signed-off-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>
Reviewed-by: Eric Anholt <96f164ad4d9b2b0dacf8ebee2bb1eeb3aa69adf1@anholt.net>
Reviewed-by: Kenneth Graunke <bd2562f754ec92342f93f61c25d731e290a2ffa8@whitecape.org>

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