arm: perf: Fix ARCH=arm build with GCC

LLVM ignores everything inside the if statement and doesn't generate
errors, but GCC doesn't ignore it, resulting in the following error:

  drivers/perf/arm_pmuv3.c: In function ‘armv8pmu_write_evtype’:
  include/linux/bits.h:34:29: error: left shift count >= width of type [-Werror=shift-count-overflow]
  34 |         (((~UL(0)) - (UL(1) << (l)) + 1) & \

Fix it by using GENMASK_ULL which doesn't overflow on arm32 (even though
the value is never used there).

Fixes: 3115ee0 ("arm64: perf: Include threshold control fields in PMEVTYPER mask")
Reported-by: Uwe Kleine-König <[email protected]>
Closes: https://lore.kernel.org/linux-arm-kernel/[email protected]/
Signed-off-by: James Clark <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Reviewed-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

Author: James-A-Clark

include/linux/perf/arm_pmuv3.h

@@ -234,8 +234,8 @@
  * PMXEVTYPER: Event selection reg
  */
 #define ARMV8_PMU_EVTYPE_EVENT	GENMASK(15, 0)	/* Mask for EVENT bits */
-#define ARMV8_PMU_EVTYPE_TH	GENMASK(43, 32)
-#define ARMV8_PMU_EVTYPE_TC	GENMASK(63, 61)
+#define ARMV8_PMU_EVTYPE_TH	GENMASK_ULL(43, 32) /* arm64 only */
+#define ARMV8_PMU_EVTYPE_TC	GENMASK_ULL(63, 61) /* arm64 only */
 
 /*
  * Event filters for PMUv3