samples: arch: mpu_test: Update Readme.

Update the readme for mpu_test sample to contain
correct sample outputs for mpu read, write and run operations.

Signed-off-by: Aastha Grover <[email protected]>

Author: aasthagr

samples/arch/mpu/mpu_test/README.rst

@@ -1,11 +1,11 @@
 .. _mpu_test:
 
-Memory Protection Unit (MPU) TEST
-#################################
+Memory Protection Unit (MPU) Sample
+###################################
 
 Overview
 ********
-This test provides a set options to check the correct MPU configuration
+This application provides a set options to check the correct MPU configuration
 against the following security issues:
 
 * Read at an address that is reserved in the memory map.
@@ -46,10 +46,43 @@ Sample Output
 .. code-block:: console
 
   uart:~$ mpu read
-  ***** BUS FAULT *****
-    Precise data bus error
-    BFAR Address: 0x24000000
-  ***** Hardware exception *****
-  Current thread ID = 0x20000400
-  Faulting instruction address = 0x80004a8
-  Fatal fault in thread 0x20000400! Aborting.
+  <err> os: ***** BUS FAULT *****
+  <err> os:   Precise data bus error
+  <err> os:   BFAR Address: 0x24000000
+  <err> os: r0/a1:  0x00009a5c  r1/a2:  0x00000008  r2/a3:  0x20001aa8
+  <err> os: r3/a4:  0x24000000 r12/ip:  0x00000000 r14/lr:  0x000029b7
+  <err> os:  xpsr:  0x21000000
+  <err> os: Faulting instruction address (r15/pc): 0x000003c8
+  <err> os: >>> ZEPHYR FATAL ERROR 0: CPU exception on CPU 0
+  <err> os: Current thread: 0x20000708 (shell_uart)
+  <err> os: Halting system
+
+
+.. code-block:: console
+
+  uart:~$ mpu write
+  write address: 0x4000
+  <err> os: ***** MPU FAULT *****
+  <err> os:   Data Access Violation
+  <err> os:   MMFAR Address: 0x4000
+  <err> os: r0/a1:  0x00000000  r1/a2:  0x0000000e  r2/a3:  0x0badc0de
+  <err> os: r3/a4:  0x00004000 r12/ip:  0x00000004 r14/lr:  0x000003ab
+  <err> os:  xpsr:  0x61000000
+  <err> os: Faulting instruction address (r15/pc): 0x000003b2
+  <err> os: >>> ZEPHYR FATAL ERROR 0: CPU exception on CPU 0
+  <err> os: Current thread: 0x20000708 (shell_uart)
+  <err> os: Halting system
+
+
+.. code-block:: console
+
+  uart:~$ mpu run
+  <err> os: ***** MPU FAULT *****
+  <err> os:   Instruction Access Violation
+  <err> os: r0/a1:  0x00009a5c  r1/a2:  0x00000001  r2/a3:  0x20001aa8
+  <err> os: r3/a4:  0x20000000 r12/ip:  0x00000000 r14/lr:  0x00006673
+  <err> os:  xpsr:  0x60000000
+  <err> os: Faulting instruction address (r15/pc): 0x20000000
+  <err> os: >>> ZEPHYR FATAL ERROR 0: CPU exception on CPU 0
+  <err> os: Current thread: 0x20000708 (shell_uart)
+  <err> os: Halting system