xen/arm: cpuerrata: Add MIDR_ALL_VERSIONS

Introduce a new macro MIDR_ALL_VERSIONS to match all variant/revision of a
given CPU model.

This is part of XSA-254.

Signed-off-by: Julien Grall <julien.grall@linaro.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

xen/arch/arm/cpuerrata.c

@@ -7,6 +7,12 @@
     .midr_range_min = min,              \
     .midr_range_max = max
 
+#define MIDR_ALL_VERSIONS(model)        \
+    .matches = is_affected_midr_range,  \
+    .midr_model = model,                \
+    .midr_range_min = 0,                \
+    .midr_range_max = (MIDR_VARIANT_MASK | MIDR_REVISION_MASK)
+
 static bool __maybe_unused
 is_affected_midr_range(const struct arm_cpu_capabilities *entry)
 {