Documentation: Move balloon option out of i386 only section

The balloon option is not i386 only, so move it into the standard
options section.
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

qemu-options.hx

@@ -456,6 +456,19 @@ modprobe i810_audio clocking=48000
 @end example
 ETEXI
 
+DEF("balloon", HAS_ARG, QEMU_OPTION_balloon,
+    "-balloon none   disable balloon device\n"
+    "-balloon virtio[,addr=str]\n"
+    "                enable virtio balloon device (default)\n", QEMU_ARCH_ALL)
+STEXI
+@item -balloon none
+@findex -balloon
+Disable balloon device.
+@item -balloon virtio[,addr=@var{addr}]
+Enable virtio balloon device (default), optionally with PCI address
+@var{addr}.
+ETEXI
+
 STEXI
 @end table
 ETEXI
@@ -1120,19 +1133,6 @@ STEXI
 Disable HPET support.
 ETEXI
 
-DEF("balloon", HAS_ARG, QEMU_OPTION_balloon,
-    "-balloon none   disable balloon device\n"
-    "-balloon virtio[,addr=str]\n"
-    "                enable virtio balloon device (default)\n", QEMU_ARCH_ALL)
-STEXI
-@item -balloon none
-@findex -balloon
-Disable balloon device.
-@item -balloon virtio[,addr=@var{addr}]
-Enable virtio balloon device (default), optionally with PCI address
-@var{addr}.
-ETEXI
-
 DEF("acpitable", HAS_ARG, QEMU_OPTION_acpitable,
     "-acpitable [sig=str][,rev=n][,oem_id=str][,oem_table_id=str][,oem_rev=n][,asl_compiler_id=str][,asl_compiler_rev=n][,{data|file}=file1[:file2]...]\n"
     "                ACPI table description\n", QEMU_ARCH_I386)