of: clean up OF_CONTROL ifdef conditionals

We have flipped CONFIG_SPL_DISABLE_OF_CONTROL.  We have cleansing
devices, $(SPL_) and CONFIG_IS_ENABLED(), so we are ready to clear
away the ugly logic in include/fdtdec.h:

 #ifdef CONFIG_OF_CONTROL
 # if defined(CONFIG_SPL_BUILD) && !defined(SPL_OF_CONTROL)
 #  define OF_CONTROL 0
 # else
 #  define OF_CONTROL 1
 # endif
 #else
 # define OF_CONTROL 0
 #endif

Now CONFIG_IS_ENABLED(OF_CONTROL) is the substitute.  It refers to
CONFIG_OF_CONTROL for U-boot proper and CONFIG_SPL_OF_CONTROL for
SPL.

Also, we no longer have to cancel CONFIG_OF_CONTROL in
include/config_uncmd_spl.h and scripts/Makefile.spl.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/video/exynos_dp_lowlevel.c b/drivers/video/exynos_dp_lowlevel.c
index 05118f8..e9b461a 100644
--- a/drivers/video/exynos_dp_lowlevel.c
+++ b/drivers/video/exynos_dp_lowlevel.c
@@ -22,7 +22,7 @@
 
 void exynos_dp_set_base_addr(void)
 {
-#ifdef CONFIG_OF_CONTROL
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 	unsigned int node = fdtdec_next_compatible(gd->fdt_blob,
 					0, COMPAT_SAMSUNG_EXYNOS5_DP);
 	if (node <= 0)
diff --git a/drivers/video/exynos_fb.c b/drivers/video/exynos_fb.c
index 8f3b826..69edc3a 100644
--- a/drivers/video/exynos_fb.c
+++ b/drivers/video/exynos_fb.c
@@ -28,7 +28,7 @@
 
 static unsigned int panel_width, panel_height;
 
-#ifdef CONFIG_OF_CONTROL
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 vidinfo_t panel_info  = {
 	/*
 	 * Insert a value here so that we don't end up in the BSS
@@ -126,7 +126,7 @@
 
 	exynos_backlight_on(1);
 
-#ifdef CONFIG_OF_CONTROL
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 	node = fdtdec_next_compatible(gd->fdt_blob, 0,
 						COMPAT_SAMSUNG_EXYNOS_FIMD);
 	if (node <= 0) {
@@ -150,7 +150,7 @@
 		exynos_mipi_dsi_init();
 }
 
-#ifdef CONFIG_OF_CONTROL
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 int exynos_lcd_early_init(const void *blob)
 {
 	unsigned int node;
@@ -295,7 +295,7 @@
 	set_system_display_ctrl();
 	set_lcd_clk();
 
-#ifdef CONFIG_OF_CONTROL
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 #ifdef CONFIG_EXYNOS_MIPI_DSIM
 	exynos_init_dsim_platform_data(&panel_info);
 #endif
diff --git a/drivers/video/exynos_fimd.c b/drivers/video/exynos_fimd.c
index f67fa81..ac001a8 100644
--- a/drivers/video/exynos_fimd.c
+++ b/drivers/video/exynos_fimd.c
@@ -251,7 +251,7 @@
 	writel(cfg, &fimd_ctrl->winshmap);
 }
 
-#ifdef CONFIG_OF_CONTROL
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 /*
 * The reset value for FIMD SYSMMU register MMU_CTRL is 3
 * on Exynos5420 and newer versions.
@@ -295,7 +295,7 @@
 {
 	unsigned int cfg = 0, rgb_mode;
 	unsigned int offset;
-#ifdef CONFIG_OF_CONTROL
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 	unsigned int node;
 
 	node = fdtdec_next_compatible(gd->fdt_blob,
diff --git a/drivers/video/exynos_mipi_dsi.c b/drivers/video/exynos_mipi_dsi.c
index c68ebd6..b597acc 100644
--- a/drivers/video/exynos_mipi_dsi.c
+++ b/drivers/video/exynos_mipi_dsi.c
@@ -28,7 +28,7 @@
 DECLARE_GLOBAL_DATA_PTR;
 
 static struct exynos_platform_mipi_dsim *dsim_pd;
-#ifdef CONFIG_OF_CONTROL
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 static struct mipi_dsim_config dsim_config_dt;
 static struct exynos_platform_mipi_dsim dsim_platform_data_dt;
 static struct mipi_dsim_lcd_device mipi_lcd_device_dt;
@@ -249,7 +249,7 @@
 	dsim_pd = pd;
 }
 
-#ifdef CONFIG_OF_CONTROL
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 int exynos_dsim_config_parse_dt(const void *blob)
 {
 	int node;
diff --git a/drivers/video/tegra.c b/drivers/video/tegra.c
index 33c6103..8e81346 100644
--- a/drivers/video/tegra.c
+++ b/drivers/video/tegra.c
@@ -49,7 +49,7 @@
 	.vl_col = -1,
 };
 
-#ifndef CONFIG_OF_CONTROL
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 #error "You must enable CONFIG_OF_CONTROL to get Tegra LCD support"
 #endif