sunxi: GPIO pin mux hardware-feature-specific function index defines

Each hardware feature exposed through the GPIO pin mux is usually using the same
function index (for a given port), so there is no need to define one value per
pin: one value per hardware feature per port is sufficient, avoids duplication
and makes everything easier to understand.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index 4e12150..d2341b0 100644
--- a/drivers/video/sunxi_display.c
+++ b/drivers/video/sunxi_display.c
@@ -665,10 +665,10 @@
 
 	for (pin = SUNXI_GPD(0); pin <= SUNXI_GPD(27); pin++)
 #ifdef CONFIG_VIDEO_LCD_IF_PARALLEL
-		sunxi_gpio_set_cfgpin(pin, SUNXI_GPD0_LCD0);
+		sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LCD0);
 #endif
 #ifdef CONFIG_VIDEO_LCD_IF_LVDS
-		sunxi_gpio_set_cfgpin(pin, SUNXI_GPD0_LVDS0);
+		sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LVDS0);
 #endif
 
 	sunxi_lcdc_pll_set(0, mode->pixclock_khz, &clk_div, &clk_double);
@@ -779,8 +779,8 @@
 	       &lcdc->tcon1_timing_sync);
 
 	if (use_portd_hvsync) {
-		sunxi_gpio_set_cfgpin(SUNXI_GPD(26), SUNXI_GPD0_LCD0);
-		sunxi_gpio_set_cfgpin(SUNXI_GPD(27), SUNXI_GPD0_LCD0);
+		sunxi_gpio_set_cfgpin(SUNXI_GPD(26), SUNXI_GPD_LCD0);
+		sunxi_gpio_set_cfgpin(SUNXI_GPD(27), SUNXI_GPD_LCD0);
 
 		val = 0;
 		if (mode->sync & FB_SYNC_HOR_HIGH_ACT)