panfrost: Fix printf format specifier.
bifrost_sampler_descriptor.zero1 is of type uint8_t.
Fix warning reported by Coverity.
Invalid type in argument to printf format specifier (PRINTF_ARGS)
invalid_type: Argument s->zero1 to format specifier %lx was expected to
have type unsigned long but has type unsigned char.
Fixes: 6148d1be4bb5 ("panfrost: Fix size of bifrost sampler descriptor")
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
cc: @alyssa