style: move ALWAYS_INLINE to the beginning to resolve compiler warnings

With gcc from the zephyr sdk and -Wold-style-declaration is giving this
output:
zephyr/arch/arm/core/aarch32/cortex_a_r/fault.c:101:1: warning:
  'inline' is not at beginning of declaration [-Wold-style-declaration]
  101 | static void ALWAYS_INLINE
                    z_arm_fpu_caller_save(struct __fpu_sf *fpu)
      | ^~~~~~

I searched to all of the source code to find these further occurances
where inline is not at the beginning of a function declaration.

Signed-off-by: Florian La Roche <Florian.LaRoche@gmail.com>