s390/disassembler: Remove duplicate instruction format RSY_RDRU

Instruction format RSY_RDRU is a duplicate of RSY_RURD2. Use the latter,
as it follows the s390-specific conventions for instruction format
naming used in binutils.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

arch/s390/kernel/dis.c

@@ -259,7 +259,6 @@ static const unsigned char formats[][6] = {
 	[INSTR_RSL_R0RD]     = { D_20, L4_8, B_16, 0, 0, 0 },
 	[INSTR_RSY_AARD]     = { A_8, A_12, D20_20, B_16, 0, 0 },
 	[INSTR_RSY_CCRD]     = { C_8, C_12, D20_20, B_16, 0, 0 },
-	[INSTR_RSY_RDRU]     = { R_8, D20_20, B_16, U4_12, 0, 0 },
 	[INSTR_RSY_RRRD]     = { R_8, R_12, D20_20, B_16, 0, 0 },
 	[INSTR_RSY_RURD]     = { R_8, U4_12, D20_20, B_16, 0, 0 },
 	[INSTR_RSY_RURD2]    = { R_8, D20_20, B_16, U4_12, 0, 0 },

arch/s390/tools/opcodes.txt

@@ -1118,9 +1118,9 @@ eb54	niy	SIY_URD
 eb55	cliy	SIY_URD
 eb56	oiy	SIY_URD
 eb57	xiy	SIY_URD
-eb60	lric	RSY_RDRU
-eb61	stric	RSY_RDRU
-eb62	mric	RSY_RDRU
+eb60	lric	RSY_RURD2
+eb61	stric	RSY_RURD2
+eb62	mric	RSY_RURD2
 eb6a	asi	SIY_IRD
 eb6e	alsi	SIY_IRD
 eb71	lpswey	SIY_RD
@@ -1128,7 +1128,7 @@ eb7a	agsi	SIY_IRD
 eb7e	algsi	SIY_IRD
 eb80	icmh	RSY_RURD
 eb81	icmy	RSY_RURD
-eb8a	sqbs	RSY_RDRU
+eb8a	sqbs	RSY_RURD2
 eb8e	mvclu	RSY_RRRD
 eb8f	clclu	RSY_RRRD
 eb90	stmy	RSY_RRRD