boards: qemu: add image to qemu boards

Add Qemu logo to qemu boards and expand intro.

Signed-off-by: Anas Nashif <[email protected]>

Author: nashif

boards/arm/qemu_cortex_m3/doc/index.rst

@@ -7,6 +7,14 @@ Overview
 ********
 
 This board configuration will use QEMU to emulate the TI LM3S6965 platform.
+
+.. figure:: qemu_cortex_m3.png
+   :width: 600px
+   :align: center
+   :alt: Qemu
+
+   Qemu (Credit: qemu.org)
+
 This configuration provides support for an ARM Cortex-M3 CPU and these devices:
 
 * Nested Vectored Interrupt Controller

boards/arm/qemu_cortex_m3/doc/qemu_cortex_m3.png

@@ -7,6 +7,15 @@ Overview
 ********
 
 This board configuration will use QEMU to emulate the Altera MAX 10 platform.
+
+
+.. figure:: qemu_nios2.png
+   :width: 600px
+   :align: center
+   :alt: Qemu
+
+   Qemu (Credit: qemu.org)
+
 This configuration provides support for an Altera Nios-II CPU and these devices:
 
 * Internal Interrupt Controller

boards/nios2/qemu_nios2/doc/index.rst

@@ -8,6 +8,13 @@ Overview
 
 The RISCV32 QEMU board configuration is used to emulate the RISCV32 architecture.
 
+.. figure:: qemu_riscv32.png
+   :width: 600px
+   :align: center
+   :alt: Qemu
+
+   Qemu (Credit: qemu.org)
+
 Programming and Debugging
 *************************
 

boards/nios2/qemu_nios2/doc/qemu_nios2.png

@@ -6,9 +6,17 @@ X86 Emulation (QEMU)
 Overview
 ********
 
-The X86 QEMU board configuration is used to emulate the X86 architecture. This board
-configuration provides support for an x86 Minute IA (Lakemont) CPU and the
-following devices:
+The X86 QEMU board configuration is used to emulate the X86 architecture.
+
+.. figure:: qemu_x86.png
+   :width: 600px
+   :align: center
+   :alt: Qemu
+
+   Qemu (Credit: qemu.org)
+
+This board configuration provides support for an x86 Minute IA (Lakemont) CPU
+and the following devices:
 
 * HPET
 * Advanced Programmable Interrupt Controller (APIC)

boards/riscv32/qemu_riscv32/doc/index.rst

@@ -9,6 +9,13 @@ Overview
 The QEMU board configuration is used to emulate the Xtensa architecture. This board
 configuration provides support for the Xtensa simulation environment.
 
+.. figure:: qemu_xtensa.png
+   :width: 600px
+   :align: center
+   :alt: Qemu
+
+   Qemu (Credit: qemu.org)
+
 Programming and Debugging
 *************************