dts/core: Fix typo in the spi0 fragment [REVPI-2298]

Created by: iluminat23

Commit 5dba555f0606 ("dts/core: Use own fragments to modify existing pinmuxes") introduced a typo: "frgment@8". It must say "fragment@8". With this typo the fragment is not applied. Thus leads to the situation that spi0 is not enabled. And picontrol won't even load because the spi0 thread is missing.

Signed-off-by: Philipp Rosenberger p.rosenberger@kunbus.com