Rename `inline` macro into `__always_inline` so one can differentiate
between the macro and the C keyword. While at it, undefine the
previous `__always_inline` macro so s390.h can be used in combination
with glibc.
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>