Move do_irqinfo() to common/cmd_irq.c

cmd_irq.c is a much better home and it is already conditionally
compiled based on CONFIG_CMD_IRQ.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

common/cmd_irq.c

@@ -47,3 +47,12 @@ U_BOOT_CMD(
 	"enable or disable interrupts",
 	"[on, off]"
 );
+
+/* Implemented in $(CPU)/interrupts.c */
+int do_irqinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+
+U_BOOT_CMD(
+	irqinfo,    1,    1,     do_irqinfo,
+	"print information about IRQs",
+	""
+);

common/cmd_misc.c

@@ -49,17 +49,6 @@ int do_sleep (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	return 0;
 }
 
-/* Implemented in $(CPU)/interrupts.c */
-#if defined(CONFIG_CMD_IRQ)
-int do_irqinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
-
-U_BOOT_CMD(
-	irqinfo,    1,    1,     do_irqinfo,
-	"print information about IRQs",
-	""
-);
-#endif
-
 U_BOOT_CMD(
 	sleep ,    2,    1,     do_sleep,
 	"delay execution for some time",