bsp: Update BSP to CMSIS6

* As CMSIS6 provides VSI IRQ handlers and IRQ definitions,
  the BSP patches related to VSI IRQs are removed.

* BSP patch files that reference the `CMSIS_Driver/Include`
  path have been amended, as the path no longer exists and
  the files patched have moved.

* Changed VSI IRQ handlername to the offical
  ARM_VSI0_Handler

* Added RTE_Components.h which enables USART and MPS3 IO
  CMSIS components.

Signed-off-by: Dávid Házi <david.hazi@arm.com>