added patch to improve gamma in st7789 driver

FunKey/board/funkey/patches/linux/0019_st7789v_improved_gamma.patch

@@ -0,0 +1,27 @@
+From ff9cbaaeb217a6cf2e2fffde614abfdfb3f6cf5d Mon Sep 17 00:00:00 2001
+From: vincent <vbusoenseirb@gmail.com>
+Date: Tue, 19 Nov 2019 14:02:56 +0100
+Subject: [PATCH] changed st7789v gamma
+
+---
+ drivers/staging/fbtft/fb_st7789v.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c
+index 00756de..212836f 100755
+--- a/drivers/staging/fbtft/fb_st7789v.c
++++ b/drivers/staging/fbtft/fb_st7789v.c
+@@ -26,8 +26,8 @@
+ #define DRVNAME "fb_st7789v"
+ 
+ #define DEFAULT_GAMMA \
+-	"70 2C 2E 15 10 09 48 33 53 0B 19 18 20 25\n" \
+-	"70 2C 2E 15 10 09 48 33 53 0B 19 18 20 25"
++	"f0 19 1e 0A 09 15 3D 44 51 19 14 13 2c 31\n" \
++	"f0 18 1E 0A 09 25 3F 43 52 19 14 13 2c 31"
+ 
+ /**
+  * enum st7789v_command - ST7789V display controller commands
+-- 
+1.9.1
+