ARM: multi_v7_defconfig: Enable frame buffer console for armadillo800eva

Enabling the frame buffer device on r8a7740/armadillo800eva requires the
board staging code.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/configs/multi_v7_defconfig

@@ -663,6 +663,7 @@ CONFIG_QCOM_SMD_RPM=y
 CONFIG_QCOM_SMEM=y
 CONFIG_COMMON_CLK_QCOM=y
 CONFIG_CHROME_PLATFORMS=y
+CONFIG_STAGING_BOARD=y
 CONFIG_CROS_EC_CHARDEV=m
 CONFIG_COMMON_CLK_MAX77686=y
 CONFIG_COMMON_CLK_MAX77802=m