[PATCH v2 02/23] linux/device.h: use unique identifier for each struct _ddebug

Changes on x86-64 later in this series require that all struct _ddebug descriptors in a translation unit uses distinct identifiers. Realize that for dev_dbg_ratelimited by generating such an identifier via __UNIQUE_ID and pass that to an extra level of macros. No functional change. Reviewed-by:

[PATCH v2 02/23] linux/device.h: use unique identifier for each struct _ddebug

Changes on x86-64 later in this series require that all struct _ddebug descriptors in a translation unit uses distinct identifiers. Realize that for dev_dbg_ratelimited by generating such an identifier via __UNIQUE_ID and pass that to an extra level of macros. No functional change. Reviewed-by: