[PATCH v2] mos6522: fix linking error when CONFIG_MOS6522 is not set

[Murilo Opsfelder Araujo <muriloo@linux.ibm.com>]

When CONFIG_MOS6522 is not set, building ppc64-softmmu target fails:

    /usr/bin/ld: libqemu-ppc64-softmmu.fa.p/monitor_misc.c.o:(.data+0x1158): undefined reference to `hmp_info_via'

Make devices configuration available in hmp-commands*.hx and check for
CONFIG_MOS6522.

Fixes: 409e9f7131e5 (mos6522: add "info via" HMP command for debugging)
Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Fabiano Rosas <farosas@linux.ibm.com>
---
v2:
- Included devices configuration in monitor/misc.c

v1:
- https://lore.kernel.org/qemu-devel/20220429233146.29662-1-muriloo@linux.ibm.com/

 hmp-commands-info.hx | 2 ++
 monitor/misc.c       | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index adfa085a9b..9ad784dd9f 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -881,6 +881,7 @@ SRST
 ERST
 
 #if defined(TARGET_M68K) || defined(TARGET_PPC)
+#if defined(CONFIG_MOS6522)
     {
         .name         = "via",
         .args_type    = "",
@@ -889,6 +890,7 @@ ERST
         .cmd          = hmp_info_via,
     },
 #endif
+#endif
 
 SRST
   ``info via``
diff --git a/monitor/misc.c b/monitor/misc.c
index 6c5bb82d3b..3d2312ba8d 100644
--- a/monitor/misc.c
+++ b/monitor/misc.c
@@ -84,6 +84,9 @@
 #include "hw/s390x/storage-attributes.h"
 #endif
 
+/* Make devices configuration available for use in hmp-commands*.hx templates */
+#include CONFIG_DEVICES
+
 /* file descriptors passed via SCM_RIGHTS */
 typedef struct mon_fd_t mon_fd_t;
 struct mon_fd_t {
-- 
2.35.1