powerpc/85xx: Fix typo in mpc8572ds dts

The localbus node flash had a minor typo for a read-only property.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

+1 -1
+1 -1
arch/powerpc/boot/dts/mpc8572ds.dts
··· 89 89 90 90 ramdisk@0 { 91 91 reg = <0x0 0x03000000>; 92 - readl-only; 92 + read-only; 93 93 }; 94 94 95 95 diagnostic@3000000 {