arm: qemu: Enable usb keyboard as an input device

Commit 02be57caf730 ("riscv: qemu: Enable usb keyboard as an input
device") adds PCI xHCI support to QEMU RISC-V virtual machines and
enables using a USB keyboard as one of the input devices. Similarly,
enable those for ARM virtual machines as well.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng@tinylab.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 9332829..71f820e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1042,6 +1042,11 @@
 	imply SYS_WHITE_ON_BLACK
 	imply SYS_CONSOLE_IS_IN_ENV
 	imply PRE_CONSOLE_BUFFER
+	imply USB
+	imply USB_XHCI_HCD
+	imply USB_XHCI_PCI
+	imply USB_KEYBOARD
+	imply CMD_USB
 
 config ARCH_RMOBILE
 	bool "Renesas ARM SoCs"