ARM: shmobile: armadillo800eva: Enable backlight control in defconfig

The backlight is controlled by a PWM signal generated by the TPU.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/configs/armadillo800eva_defconfig

@@ -105,6 +105,7 @@ CONFIG_FB=y
 CONFIG_FB_SH_MOBILE_LCDC=y
 CONFIG_FB_SH_MOBILE_HDMI=y
 CONFIG_LCD_CLASS_DEVICE=y
+CONFIG_BACKLIGHT_PWM=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
 CONFIG_LOGO=y
@@ -130,6 +131,8 @@ CONFIG_DMADEVICES=y
 CONFIG_SH_DMAE=y
 CONFIG_UIO=y
 CONFIG_UIO_PDRV_GENIRQ=y
+CONFIG_PWM=y
+CONFIG_PWM_RENESAS_TPU=y
 # CONFIG_DNOTIFY is not set
 CONFIG_MSDOS_FS=y
 CONFIG_VFAT_FS=y