Linux 5.0 compat: ASM_BUG macro

The 5.0 kernel defines the macro ASM_BUG.  In order to prevent a
conflict and build failure rename ASM_BUG to ZFS_ASM_BUG.  This
is currently only an issue on aarch64 but all instances of
ASM_BUG we're renamed to avoid any future conflict on x86_64.

Reviewed-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Chris Dunlop <chris@onthe.net.au>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #8725 
Issue #8545

module/zfs/vdev_raidz_math_avx512bw.c

@@ -57,7 +57,7 @@
 #define	_R_23(_0, _1, REG2, REG3, ...) REG2, REG3
 #define	R_23(REG...) _R_23(REG, 1, 2, 3)
 
-#define	ASM_BUG()	ASSERT(0)
+#define	ZFS_ASM_BUG()	ASSERT(0)
 
 extern const uint8_t gf_clmul_mod_lt[4*256][16];
 
@@ -85,7 +85,7 @@ typedef struct v {
 		    : : [SRC] "r" (src));				\
 		break;							\
 	default:							\
-		ASM_BUG();						\
+		ZFS_ASM_BUG();						\
 	}								\
 }
 
@@ -105,7 +105,7 @@ typedef struct v {
 		    "vpxorq %" VR1(r) ", %" VR3(r)", %" VR3(r));	\
 		break;							\
 	default:							\
-		ASM_BUG();						\
+		ZFS_ASM_BUG();						\
 	}								\
 }
 
@@ -127,7 +127,7 @@ typedef struct v {
 		    "vmovdqa64 %" VR1(r) ", %" VR3(r));			\
 		break;							\
 	default:							\
-		ASM_BUG();						\
+		ZFS_ASM_BUG();						\
 	}								\
 }
 
@@ -149,7 +149,7 @@ typedef struct v {
 		    : : [SRC] "r" (src));				\
 		break;							\
 	default:							\
-		ASM_BUG();						\
+		ZFS_ASM_BUG();						\
 	}								\
 }
 
@@ -171,7 +171,7 @@ typedef struct v {
 		    : : [DST] "r" (dst));				\
 		break;							\
 	default:							\
-		ASM_BUG();						\
+		ZFS_ASM_BUG();						\
 	}								\
 }
 
@@ -197,7 +197,7 @@ typedef struct v {
 		    "vmovdqu8   %zmm13,     %" VR1(r) "{%k2}");		\
 		break;							\
 	default:							\
-		ASM_BUG();						\
+		ZFS_ASM_BUG();						\
 	}								\
 }
 
@@ -212,7 +212,7 @@ typedef struct v {
 	    _MUL2(r);							\
 	    break;							\
 	default:							\
-		ASM_BUG();						\
+		ZFS_ASM_BUG();						\
 	}								\
 }
 
@@ -273,7 +273,7 @@ static const uint8_t __attribute__((aligned(64))) _mul_mask = 0x0F;
 		    [lt] "r" (gf_clmul_mod_lt[4*(c)]));			\
 		break;							\
 	default:							\
-		ASM_BUG();						\
+		ZFS_ASM_BUG();						\
 	}								\
 }
 
@@ -288,7 +288,7 @@ static const uint8_t __attribute__((aligned(64))) _mul_mask = 0x0F;
 		_MULx2(c, R_01(r));					\
 		break;							\
 	default:							\
-		ASM_BUG();						\
+		ZFS_ASM_BUG();						\
 	}								\
 }