omap3: Kconfig: fix the cm-t35 board option prompt

The cm-t35 board support covers both cm-t3530 and cm-t3730 boards.
Mention both boards in the Kconfig option prompt.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>

arch/arm/cpu/armv7/omap3/Kconfig

@@ -16,7 +16,7 @@ config TARGET_OMAP3_BEAGLE
 	bool "TI OMAP3 BeagleBoard"
 
 config TARGET_CM_T35
-	bool "CompuLab CM-T35"
+	bool "CompuLab CM-T3530 and CM-T3730 boards"
 
 config TARGET_DEVKIT8000
 	bool "TimLL OMAP3 Devkit8000"