[PATCH v2 03/10] irqdomain: Introduce __irq_create_mapping()

This is a version of irq_create_mapping() that propagates the precise error code instead of returning 0 for all errors. It will be used in subsequent patches to allow further propagation of error codes. To avoid code duplication, implement irq_create_mapping() as a wrapper around the new

[PATCH v2 03/10] irqdomain: Introduce __irq_create_mapping()

This is a version of irq_create_mapping() that propagates the precise error code instead of returning 0 for all errors. It will be used in subsequent patches to allow further propagation of error codes. To avoid code duplication, implement irq_create_mapping() as a wrapper around the new