perf arm-spe: Include bitops.h for BIT() macro

Include header linux/bitops.h, directly use its BIT() macro and remove
the self defined macros.

Committer notes:

Use BIT_ULL() instead of BIT to build on 32-bit arches as mentioned in
review by Andre Przywara <andre.przywara@arm.com>. I noticed the build
failure when crossbuilding to arm32 from x86_64.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20201111071149.815-2-leo.yan@linaro.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/arm-spe-decoder/arm-spe-decoder.c

@@ -12,6 +12,7 @@
 #include <string.h>
 #include <stdint.h>
 #include <stdlib.h>
+#include <linux/bitops.h>
 #include <linux/compiler.h>
 #include <linux/zalloc.h>
 
@@ -21,10 +22,6 @@
 
 #include "arm-spe-decoder.h"
 
-#ifndef BIT
-#define BIT(n)		(1UL << (n))
-#endif
-
 static u64 arm_spe_calc_ip(int index, u64 payload)
 {
 	u8 *addr = (u8 *)&payload;

tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c

@@ -8,13 +8,12 @@
 #include <string.h>
 #include <endian.h>
 #include <byteswap.h>
+#include <linux/bitops.h>
 
 #include "arm-spe-pkt-decoder.h"
 
-#define BIT(n)		(1ULL << (n))
-
-#define NS_FLAG		BIT(63)
-#define EL_FLAG		(BIT(62) | BIT(61))
+#define NS_FLAG		BIT_ULL(63)
+#define EL_FLAG		(BIT_ULL(62) | BIT_ULL(61))
 
 #define SPE_HEADER0_PAD			0x0
 #define SPE_HEADER0_END			0x1