opcodes/arm: adjust whitespace in cpsie instruction

While I was working on the disassembler styling for ARM I noticed that
the whitespace in the cpsie instruction was inconsistent with most of
the other ARM disassembly output, the disassembly for cpsie looks like
this:

  cpsie   if,#10

notice there's no space before the '#10' immediate, most other ARM
instructions have a space before each operand.

This commit updates the disassembler to add the missing space, and
updates the tests I found that tested this instruction.

gas/testsuite/gas/arm/archv6.d

@@ -219,7 +219,7 @@ Disassembly of section .text:
 0+34c <[^>]*> e6ef2475 ?	uxtb	r2, r5, ror #8
 0+350 <[^>]*> 16ef2075 ?	uxtbne	r2, r5
 0+354 <[^>]*> 16ef2475 ?	uxtbne	r2, r5, ror #8
-0+358 <[^>]*> f10a00ca ?	cpsie	if,#10
-0+35c <[^>]*> f10a00d5 ?	cpsie	if,#21
+0+358 <[^>]*> f10a00ca ?	cpsie	if, #10
+0+35c <[^>]*> f10a00d5 ?	cpsie	if, #21
 0+360 <[^>]*> f8cd0510 ?	srsia	sp, #16
 0+364 <[^>]*> f9ed0510 ?	srsib	sp!, #16

gas/testsuite/gas/arm/t16-bad.s

@@ -131,8 +131,8 @@ l:
 
 	@ Miscellaneous
 	bkpt	#257
-	cpsie	ai,#5
-	cpsid	ai,#5
+	cpsie	ai, #5
+	cpsid	ai, #5
 
 	@ Conditional suffixes
 	addeq	r0,r1,r2

opcodes/arm-dis.c

@@ -3828,11 +3828,11 @@ static const struct opcode32 arm_opcodes[] =
   {ARM_FEATURE_CORE_LOW (ARM_EXT_V6),
     0xf1080000, 0xfffffe3f, "cpsie\t%{B:%8'a%7'i%6'f%}"},
   {ARM_FEATURE_CORE_LOW (ARM_EXT_V6),
-    0xf10a0000, 0xfffffe20, "cpsie\t%{B:%8'a%7'i%6'f%},%{I:#%0-4d%}"},
+    0xf10a0000, 0xfffffe20, "cpsie\t%{B:%8'a%7'i%6'f%}, %{I:#%0-4d%}"},
   {ARM_FEATURE_CORE_LOW (ARM_EXT_V6),
     0xf10C0000, 0xfffffe3f, "cpsid\t%{B:%8'a%7'i%6'f%}"},
   {ARM_FEATURE_CORE_LOW (ARM_EXT_V6),
-    0xf10e0000, 0xfffffe20, "cpsid\t%{B:%8'a%7'i%6'f%},%{I:#%0-4d%}"},
+    0xf10e0000, 0xfffffe20, "cpsid\t%{B:%8'a%7'i%6'f%}, %{I:#%0-4d%}"},
   {ARM_FEATURE_CORE_LOW (ARM_EXT_V6),
     0xf1000000, 0xfff1fe20, "cps\t%{I:#%0-4d%}"},
   {ARM_FEATURE_CORE_LOW (ARM_EXT_V6),