Install dmidecode package for ARM platforms (sonic-net#21577)

- Why I did it
dmidecode is a package required for arm platforms including Nvidia DPUs. Platform dump in the tech support bundle was missing the dmidecode output. This occurred because dmidecode was not installed on the DPUs.

- How I did it
Added dmidecode to the list of required packages for installation and removed it from the installation path for the amd64 architecture only.

- How to verify it
Verified tech support bundle after the fix, and it now includes the dmidecode data as expected.

Signed-off-by: ram25794 <ssingamala@nvidia.com>

Author: ram25794

build_debian.sh

@@ -169,7 +169,7 @@ sudo dpkg --root=$FILESYSTEM_ROOT -i $debs_path/linux-image-${LINUX_KERNEL_VERSI
     sudo LANG=C DEBIAN_FRONTEND=noninteractive chroot $FILESYSTEM_ROOT apt-get -y install -f
 sudo LANG=C DEBIAN_FRONTEND=noninteractive chroot $FILESYSTEM_ROOT apt-get -y install acl
 if [[ $CONFIGURED_ARCH == amd64 ]]; then
-    sudo LANG=C DEBIAN_FRONTEND=noninteractive chroot $FILESYSTEM_ROOT apt-get -y install dmidecode hdparm
+    sudo LANG=C DEBIAN_FRONTEND=noninteractive chroot $FILESYSTEM_ROOT apt-get -y install hdparm
 fi
 
 ## Update initramfs for booting with squashfs+overlay
@@ -379,6 +379,7 @@ sudo LANG=C DEBIAN_FRONTEND=noninteractive chroot $FILESYSTEM_ROOT apt-get -y in
     haveged                 \
     fdisk                   \
     gpg                     \
+    dmidecode               \
     jq                      \
     auditd                  \
     linux-perf              \