ARM: imx: Enable cat and xxd commands on DH i.MX8M Plus DHCOM

Enable 'cat' command to print file from filesystem to stdout.
Enable 'xxd' command to hexdump file from filesystem to stdout.

Signed-off-by: Marek Vasut <marex@denx.de>
diff --git a/configs/imx8mp_dhcom_pdk2_defconfig b/configs/imx8mp_dhcom_pdk2_defconfig
index 0ad0e23..cbc608d 100644
--- a/configs/imx8mp_dhcom_pdk2_defconfig
+++ b/configs/imx8mp_dhcom_pdk2_defconfig
@@ -108,6 +108,8 @@
 CONFIG_CMD_USB=y
 CONFIG_CMD_USB_SDP=y
 CONFIG_CMD_USB_MASS_STORAGE=y
+CONFIG_CMD_CAT=y
+CONFIG_CMD_XXD=y
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_DHCP6=y
 CONFIG_CMD_TFTPPUT=y
diff --git a/configs/imx8mp_dhcom_pdk3_defconfig b/configs/imx8mp_dhcom_pdk3_defconfig
index 5520a4d..8ef8bf4 100644
--- a/configs/imx8mp_dhcom_pdk3_defconfig
+++ b/configs/imx8mp_dhcom_pdk3_defconfig
@@ -111,6 +111,8 @@
 CONFIG_CMD_USB=y
 CONFIG_CMD_USB_SDP=y
 CONFIG_CMD_USB_MASS_STORAGE=y
+CONFIG_CMD_CAT=y
+CONFIG_CMD_XXD=y
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_DHCP6=y
 CONFIG_CMD_TFTPPUT=y