[nrf fromtree] scripts: checkpatch: add NRF_GPIO_Type to typedefs file

So that we do not get false warnings about consistent spacing around
'*'.

Signed-off-by: Gerard Marull-Paretas <[email protected]>
(cherry picked from commit 5e8905b)

Author: gmarull

scripts/checkpatch/typedefsfile

@@ -8,3 +8,4 @@ io_rw_32
 \b[a-zA-Z_][a-zA-Z0-9_]*TypeDef
 Pwm
 FILE
+NRF_GPIO_Type