retroarch: add patch to fix fade effect

remove this patch after upgrade to 1.10.2 or later

Author: ToKe79

packages/lakka/retroarch_base/retroarch/patches/retroarch-01-vertical_fade_corrections.patch

@@ -0,0 +1,54 @@
+From e8995ca9df823eca7322819ac8ae209cf9633e8e Mon Sep 17 00:00:00 2001
+From: sonninnos <[email protected]>
+Date: Fri, 11 Mar 2022 20:59:22 +0200
+Subject: [PATCH] (XMB) Vertical Fade corrections
+
+---
+ menu/drivers/xmb.c  | 13 +++++++------
+ menu/menu_setting.c |  2 +-
+ 2 files changed, 8 insertions(+), 7 deletions(-)
+
+diff --git a/menu/drivers/xmb.c b/menu/drivers/xmb.c
+index a1e5093e441..023dddca3cb 100644
+--- a/menu/drivers/xmb.c
++++ b/menu/drivers/xmb.c
+@@ -3394,19 +3394,20 @@ static int xmb_draw_item(
+ 
+    if (menu_xmb_vertical_fade_factor)
+    {
+-      float factor     = menu_xmb_vertical_fade_factor / 100.0f / 0.004f;
+       float min_alpha  = 0.1f;
+       float max_alpha  = (i == current) ? xmb->items_active_alpha : xmb->items_passive_alpha;
+       float new_alpha  = node->alpha;
+-      float top_margin = xmb->margins_screen_top;
+       float icon_space = xmb->icon_spacing_vertical;
++      float icon_ratio = icon_space / height / icon_space * 4;
++      float scr_margin = xmb->margins_screen_top + (icon_space / icon_ratio / 400);
++      float factor     = menu_xmb_vertical_fade_factor / 100.0f / icon_ratio;
+ 
+       /* Top */
+-      if (node->y < 0)
+-         new_alpha = (node->y + top_margin + (icon_space / 4)) / factor;
++      if (i < current)
++         new_alpha = (node->y + scr_margin) / factor;
+       /* Bottom */
+-      else if (node->y > (height - (top_margin * 2)) && node->y < (height - top_margin + icon_space))
+-         new_alpha = (height - node->y - top_margin + (icon_space / 4)) / factor;
++      else if (i > current)
++         new_alpha = (height - node->y - scr_margin + icon_space) / factor;
+       /* Rest need to reset after vertical wrap-around */
+       else if (node->x == 0 && node->alpha > 0 && node->alpha != max_alpha)
+          new_alpha = max_alpha;
+diff --git a/menu/menu_setting.c b/menu/menu_setting.c
+index 10458eee750..812cc834de7 100644
+--- a/menu/menu_setting.c
++++ b/menu/menu_setting.c
+@@ -16136,7 +16136,7 @@ static bool setting_append_list(
+             (*list)[list_info->index - 1].action_ok    = &setting_action_ok_uint;
+             (*list)[list_info->index - 1].action_left  = &setting_uint_action_left_with_refresh;
+             (*list)[list_info->index - 1].action_right = &setting_uint_action_right_with_refresh;
+-            menu_settings_list_current_add_range(list, list_info, 0, 300, 1, true, true);
++            menu_settings_list_current_add_range(list, list_info, 0, 500, 1, true, true);
+             SETTINGS_DATA_LIST_CURRENT_ADD_FLAGS(list, list_info, SD_FLAG_LAKKA_ADVANCED);
+ 
+             CONFIG_PATH(