qemu_cortex_r5 excludes too many tests

[andrewboie]

$ cat boards/arm/qemu_cortex_r5/qemu_cortex_r5.yaml 
...
  ignore_tags:
    - benchmark
    - cmsis_rtos
    - interrupt
    - kernel
    - memory_protection
    - userspace

This target should not be excluding so many categories.
For memory_protection and userspace, these tests already have filters which don't run them if the feature isn't supported (CONFIG_ARCH_HAS_USERSPACE, CONFIG_MEMORY_PROTECTION)

• interrupt should be enabled or a bug filed on it (see Implement GIC-based ARM interrupt tests #22670)
• kernel should definitely be enabled, these are core kernel tests! (see arch: arm: Fix incorrect Cortex-R interrupt state control logic. #20474)
• cmsis_rtos should be enabled or a bug filed on it (see arch: arm: Fix incorrect Cortex-R interrupt state control logic. #20474)

the only category that makes sense here is 'benchmark' since QEMU does not provide useful benchmark data

[stephanosio]

@andrewboie Most of the above, including the kernel, will be enabled once all the major Cortex-R arch port bugs are addressed (see #20594).

[stephanosio]

Notes on the ignore_tags for the qemu_cortex_r5

• benchmark (Implement benchmark tests for Cortex-R and Cortex-A #22669)
  • The benchmark test implementation for ARM relies on the SysTick hardware, which is only present on the Cortex-M devices.
  • List of failed tests: https://gist.github.com/stephanosio/72baa3c03ceb430c74af7a25ff2400d0
  • Failure log: https://gist.github.com/stephanosio/b0233eded3e299a29eb3b932207cedfe
• interrupt (Implement GIC-based ARM interrupt tests #22670)
  • The interrupt test implementation for ARM assumes the availability of NVIC, which is only present on the Cortex-M devices.
  • A GIC-based implementation should be implemented for Cortex-R and Cortex-A devices (note that not all Cortex-R devices make use of the GIC, in which case the interrupt test should either be filtered out or executed partially).
  • List of failed tests: https://gist.github.com/stephanosio/3b4e575d04759f436ea9dcd0241b6eb3
  • Failure log: https://gist.github.com/f78db00e94c9dd6b1fe67d18b647cf33
• memory_protection (to be implemented as part of Cortex-R Improvement #20594)
  • MPU support is not implemented in the Cortex-R arch port.
  • This test should be enabled after the MPU implementation is available (consider implementing CMSIS-Core(R) MPU support prior to this)
• userspace (to be implemented as part of Cortex-R Improvement #20594)
  • Userspace support is not implemented in the Cortex-R arch port.
  • This test should be enabled after the userspace implementation is available.