powerpc: update hwcap.h for linux v4.15

PPC_FEATURE2_HTM_NO_SUSPEND is new in linux commit
cba6ac4869e45cc93ac5497024d1d49576e82666
PPC_FEATURE2_DARN and PPC_FEATURE2_SCV were new in v4.12 in commit
a4700a26107241cc7b9ac8528b2c6714ff99983d

arch/powerpc/bits/hwcap.h

@@ -38,3 +38,6 @@
 #define PPC_FEATURE2_HTM_NOSC		0x01000000
 #define PPC_FEATURE2_ARCH_3_00		0x00800000
 #define PPC_FEATURE2_HAS_IEEE128	0x00400000
+#define PPC_FEATURE2_DARN		0x00200000
+#define PPC_FEATURE2_SCV		0x00100000
+#define PPC_FEATURE2_HTM_NO_SUSPEND	0x00080000

arch/powerpc64/bits/hwcap.h

@@ -38,3 +38,6 @@
 #define PPC_FEATURE2_HTM_NOSC		0x01000000
 #define PPC_FEATURE2_ARCH_3_00		0x00800000
 #define PPC_FEATURE2_HAS_IEEE128	0x00400000
+#define PPC_FEATURE2_DARN		0x00200000
+#define PPC_FEATURE2_SCV		0x00100000
+#define PPC_FEATURE2_HTM_NO_SUSPEND	0x00080000