ARM: tegra: Enable CONFIG_FB

Previously CONFIG_FB was auto-selected, now it's not. We completely lost
framebuffer in tegra_defconfig. Select the CONFIG_FB to fix it.

Fixes: f611b1e7 ("drm: Avoid circular dependencies for CONFIG_FB")
Signed-off-by: NDmitry Osipenko <digetx@gmail.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>

arch/arm/configs/tegra_defconfig

@@ -209,6 +209,7 @@ CONFIG_DRM_LVDS_CODEC=y
 # CONFIG_LCD_CLASS_DEVICE is not set
 CONFIG_BACKLIGHT_CLASS_DEVICE=y
 CONFIG_BACKLIGHT_PWM=y
+CONFIG_FB=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
 CONFIG_LOGO=y