ARM: dts: omap3: Fix dts->dtb typo

Trivial, fix typo.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 05bd2a1..7b405e5 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -393,7 +393,7 @@
 
 dtb-$(CONFIG_TARGET_OMAP3_LOGIC) += \
 	logicpd-torpedo-37xx-devkit.dtb \
-	logicpd-som-lv-37xx-devkit.dts
+	logicpd-som-lv-37xx-devkit.dtb
 
 dtb-$(CONFIG_TARGET_SAMA5D2_XPLAINED) += \
 	at91-sama5d2_xplained.dtb