arc64: Put DBNZ instruction to a separate class

Put DBNZ instruction to a DBNZ class as it done for arc-elf32.

Signed-off-by: Yuriy Kolerov <ykolerov@synopsys.com>

Author: kolerov

opcodes/arc64-tbl.h

@@ -3191,7 +3191,7 @@
 { "cmp_s", 0x000070D7, 0x0000F8FF,ARC_OPCODE_ARC32 | ARC_OPCODE_ARC64, ARITH, NONE, { LIMM_S, SIMM3_5_S }, { 0 }},
 
 /* dbnz<.d> b,s13 00100bbb1000110N0BBBssssssSSSSSS.  */
-{ "dbnz", 0x208C0000, 0xF8FE8000,ARC_OPCODE_ARC32 | ARC_OPCODE_ARC64, BRANCH, NONE, { RB, SIMM13_A16_20 }, { C_DNZ_D }},
+{ "dbnz", 0x208C0000, 0xF8FE8000,ARC_OPCODE_ARC32 | ARC_OPCODE_ARC64, DBNZ, NONE, { RB, SIMM13_A16_20 }, { C_DNZ_D }},
 
 /* div<.f> a,b,c 00101bbb00000100FBBBCCCCCCAAAAAA.  */
 { "div", 0x28040000, 0xF8FF0000,ARC_OPCODE_ARC32 | ARC_OPCODE_ARC64, DIVREM, DIV, { RA_CHK, RB, RC }, { C_F }},