perf/x86/amd/uncore: Fix __percpu annotation

The __percpu annotation in struct amd_uncore is confusing Sparse:

  uncore.c:649:10: sparse: warning: incorrect type in initializer (different address spaces)
  uncore.c:649:10: sparse:    expected void const [noderef] __percpu *__vpp_verify
  uncore.c:649:10: sparse:    got union amd_uncore_info *

The reason is that the __percpu annotation sits between the '*'
dereferencing operator and the member name.

Move it before the dereferencing operator to cure this.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240304005104.394845326@linutronix.de