ARM: dts: omap3-devkit8000: fix a typo in GMPC node

"gpmc,sync-clki-ps" is not defined/documented, it should be
"gpmc,sync-clk-ps" instead.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>

arch/arm/boot/dts/omap3-devkit8000.dts

@@ -125,7 +125,7 @@ nand@0,0 {
 		nand-bus-width = <16>;
 
 		gpmc,device-nand;
-		gpmc,sync-clki-ps = <0>;
+		gpmc,sync-clk-ps = <0>;
 		gpmc,cs-on-ns = <0>;
 		gpmc,cs-rd-off-ns = <44>;
 		gpmc,cs-wr-off-ns = <44>;