risc-v/k230: update AMP related document

This patch update documents to reflect the fact that remote node is kicked
off by master node. It also adds debug dump to aid the MISA reading issue
investigation.

Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>

Documentation/platforms/risc-v/k230/boards/canmv230/index.rst

@@ -166,8 +166,6 @@ Let's put the NuttX image files as ``master.bin`` and ``remote.bin`` respectivel
    k230# usb start
    k230# ping $serverip
    k230# tftp 7000000 remote.bin
-   k230# mw.l 80200000 0 8192
-   k230# boot_baremetal 1 7000000 $filesize
    k230# tftp 8000000 master.bin
    k230# go 8000000
 

boards/risc-v/k230/canmv230/src/canmv_init.c

@@ -40,6 +40,10 @@
 #  include <nuttx/serial/uart_rpmsg.h>
 #endif
 
+#if !defined(CONFIG_BUILD_KERNEL) || defined(CONFIG_NUTTSBI)
+#  include "k230_hart.h"
+#endif
+
 #ifdef CONFIG_RPTUN
 #  include "k230_rptun.h"
 #endif
@@ -61,6 +65,15 @@
  * Private Functions
  ****************************************************************************/
 
+static void debug_dumps(void)
+{
+  /* Dumps to aid investigation */
+
+#if !defined(CONFIG_BUILD_KERNEL) || defined(CONFIG_NUTTSBI)
+  sinfo("is_big=%d\n", k230_hart_is_big());
+#endif
+}
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -129,7 +142,7 @@ int board_app_initialize(uintptr_t arg)
   mount(NULL, "/proc", "procfs", 0, NULL);
 
 #endif
-
+  debug_dumps();
   return OK;
 #endif
 }
@@ -155,6 +168,8 @@ int board_app_initialize(uintptr_t arg)
 
 void board_late_initialize(void)
 {
+  debug_dumps();
+
   /* Perform board-specific initialization */
 
 #ifdef CONFIG_BUILD_KERNEL