Merge branch kvm-arm64/selftest/linked-bps into kvmarm-master/next

* kvm-arm64/selftest/linked-bps:
  : .
  : Additional selftests for the arm64 breakpoints/watchpoints,
  : courtesy of Reiji Watanabe. From the cover letter:
  :
  : "This series adds test cases for linked {break,watch}points to the
  : debug-exceptions test, and expands {break,watch}point tests to
  : use non-zero {break,watch}points (the current test always uses
  : {break,watch}point#0)."
  : .
  KVM: arm64: selftests: Test with every breakpoint/watchpoint
  KVM: arm64: selftests: Add a test case for a linked watchpoint
  KVM: arm64: selftests: Add a test case for a linked breakpoint
  KVM: arm64: selftests: Change debug_version() to take ID_AA64DFR0_EL1
  KVM: arm64: selftests: Stop unnecessary test stage tracking of debug-exceptions
  KVM: arm64: selftests: Add helpers to enable debug exceptions
  KVM: arm64: selftests: Remove the hard-coded {b,w}pn#0 from debug-exceptions
  KVM: arm64: selftests: Add write_dbg{b,w}{c,v}r helpers in debug-exceptions
  KVM: arm64: selftests: Use FIELD_GET() to extract ID register fields

Signed-off-by: Marc Zyngier <maz@kernel.org>