Fixed 8BitDo M30 mapping to match fighting game conventions and the layout in XInput mode

src/joystick/SDL_gamepad_db.h

@@ -48,8 +48,8 @@ static const char *s_GamepadMappings[] = {
     "03000000fa2d00000100000000000000,3DRUDDER,leftx:a0,lefty:a1,rightx:a5,righty:a2,",
     "03000000c82d00000090000000000000,8BitDo FC30 Pro,a:b1,b:b0,back:b10,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,leftshoulder:b6,leftstick:b13,lefttrigger:b8,leftx:a0,lefty:a1,rightshoulder:b7,rightstick:b14,righttrigger:b9,rightx:a3,righty:a4,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
     "03000000c82d00001038000000000000,8BitDo FC30 Pro,a:b1,b:b0,back:b10,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,leftshoulder:b6,leftstick:b13,lefttrigger:b8,leftx:a0,lefty:a1,rightshoulder:b7,rightstick:b14,righttrigger:b9,rightx:a3,righty:a4,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
-    "03000000c82d00000650000000000000,8BitDo M30 Gamepad,a:b1,b:b0,back:b10,guide:b2,leftshoulder:b6,lefttrigger:b8,leftx:a0,lefty:a1,rightshoulder:b7,righttrigger:b9,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
-    "03000000c82d00005106000000000000,8BitDo M30 Gamepad,a:b1,b:b0,back:b10,guide:b2,leftshoulder:b6,lefttrigger:b8,leftx:a0,lefty:a1,rightshoulder:b7,righttrigger:b9,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
+    "03000000c82d00000650000000000000,8BitDo M30 Gamepad,a:b0,b:b1,back:b10,guide:b2,leftshoulder:b8,lefttrigger:b9,leftx:a0,lefty:a1,rightshoulder:b6,righttrigger:b7,start:b11,x:b3,y:b4,",
+    "03000000c82d00005106000000000000,8BitDo M30 Gamepad,+leftx:h0.2,+lefty:h0.4,-leftx:h0.8,-lefty:h0.1,a:b0,b:b1,back:b10,guide:b2,leftshoulder:b8,lefttrigger:b9,leftx:a0,lefty:a1,rightshoulder:b6,righttrigger:b7,start:b11,x:b3,y:b4,",
     "03000000c82d00001590000000000000,8BitDo N30 Pro 2,a:b1,b:b0,back:b10,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,guide:b2,leftshoulder:b6,leftstick:b13,lefttrigger:b8,leftx:a0,lefty:a1,rightshoulder:b7,rightstick:b14,righttrigger:b9,rightx:a3,righty:a4,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
     "03000000c82d00006528000000000000,8BitDo N30 Pro 2,a:b1,b:b0,back:b10,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,guide:b2,leftshoulder:b6,leftstick:b13,lefttrigger:b8,leftx:a0,lefty:a1,rightshoulder:b7,rightstick:b14,righttrigger:b9,rightx:a3,righty:a4,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
     "030000003512000012ab000000000000,8BitDo NES30 Gamepad,a:b1,b:b0,back:b10,dpdown:+a1,dpleft:-a0,dpright:+a0,dpup:-a1,leftshoulder:b6,rightshoulder:b7,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",