Add hotkeys to increase/decrease the IR

Source/Core/Core/ConfigManager.cpp

@@ -68,6 +68,9 @@ static const struct
 	{ "VolumeUp",              0,                    0 /* wxMOD_NONE */    },
 	{ "VolumeToggleMute",      0,                    0 /* wxMOD_NONE */    },
 
+	{ "IncreaseIR",            0,                    0 /* wxMOD_NONE */    },
+	{ "DecreaseIR",            0,                    0 /* wxMOD_NONE */    },
+
 	{ "ToggleIR",              0,                    0 /* wxMOD_NONE */    },
 	{ "ToggleAspectRatio",     0,                    0 /* wxMOD_NONE */    },
 	{ "ToggleEFBCopies",       0,                    0 /* wxMOD_NONE */    },

Source/Core/Core/CoreParameter.h

@@ -39,6 +39,9 @@ enum Hotkey
 	HK_VOLUME_UP,
 	HK_VOLUME_TOGGLE_MUTE,
 
+	HK_INCREASE_IR,
+	HK_DECREASE_IR,
+
 	HK_TOGGLE_IR,
 	HK_TOGGLE_AR,
 	HK_TOGGLE_EFBCOPIES,

Source/Core/Core/HotkeyManager.cpp

@@ -38,6 +38,9 @@ const std::string hotkey_labels[] =
 	_trans("Volume Up"),
 	_trans("Volume Toggle Mute"),
 
+	_trans("Increase IR"),
+	_trans("Decrease IR"),
+
 	_trans("Toggle IR"),
 	_trans("Toggle Aspect Ratio"),
 	_trans("Toggle EFB Copies"),