MAILBOX select mailbox driver by default ver 2

This patch selects mailbox driver by default.
Signed-off-by: Ramesh Gupta G <grgupta@ti.com>

arch/arm/configs/omap_4430sdp_defconfig

@@ -185,7 +185,7 @@ CONFIG_ARCH_OMAP4=y
 # CONFIG_OMAP_RESET_CLOCKS is not set
 # CONFIG_OMAP_MUX is not set
 # CONFIG_OMAP_MCBSP is not set
-# CONFIG_OMAP_MBOX_FWK is not set
+CONFIG_OMAP_MBOX_FWK=y
 # CONFIG_OMAP_MPU_TIMER is not set
 CONFIG_OMAP_32K_TIMER=y
 CONFIG_OMAP_32K_TIMER_HZ=128

arch/arm/plat-omap/Kconfig

@@ -113,7 +113,6 @@ config OMAP_MCBSP
 config OMAP_MBOX_FWK
 	tristate "Mailbox framework support"
 	depends on ARCH_OMAP
-	default y
 	help
 	  Say Y here if you want to use OMAP Mailbox framework support for
 	  DSP, IVA1.0 and IVA2 in OMAP1/2/3.