platform: nordic_nrf: Fix accidental delete of default SPIM3 IRQ handler

Fix accidental delete of the default SPIM3 IRQ handler.
Regression from: ec18ea271a47583d5f2257e046e1c49ace912570

Change-Id: I222cc5c7b7f641417282e4e7a6fe211bc7153d08
Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
1 file changed