[opentitan, usbdev] Create a dummy usbdev block

Signed-off-by: Douglas Reis <[email protected]>
Signed-off-by: Amaury Pouly <[email protected]>

Author: engdoreis

hw/opentitan/Kconfig

@@ -182,6 +182,9 @@ config OT_TIMER
 config OT_UART
     bool
 
+config OT_USBDEV
+    bool
+
 config OT_UNIMP
     bool
 

hw/opentitan/meson.build

@@ -55,6 +55,7 @@ system_ss.add(when: 'CONFIG_OT_SPI_HOST', if_true: files('ot_spi_host.c'))
 system_ss.add(when: 'CONFIG_OT_SRAM_CTRL', if_true: files('ot_sram_ctrl.c'))
 system_ss.add(when: 'CONFIG_OT_TIMER', if_true: files('ot_timer.c'))
 system_ss.add(when: 'CONFIG_OT_UART', if_true: files('ot_uart.c'))
+system_ss.add(when: 'CONFIG_OT_USBDEV', if_true: files('ot_usbdev.c'))
 system_ss.add(when: 'CONFIG_OT_UNIMP', if_true: files('ot_unimp.c'))
 
 riscv_ss.add(when: 'CONFIG_OT_VMAPPER', if_true: files('ot_vmapper.c'))