drm/amd/display: new ABM config 2

[Why & How]
Add configuration 2 for ABM 2.3/2.4 to suit customer preferences, which
is to lower the brightness curves in 80%-100% range compared to the
existing default config 0.
Reviewed-by: Josip Pavic <Josip.Pavic@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Camille Cho <Camille.Cho@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/modules/power/power_helpers.c

@@ -102,9 +102,18 @@ static const struct abm_parameters abm_settings_config1[abm_defines_max_level] =
 	{0x82,   0x4d,    0x20,       0x00,     0x00,        0xff,     0xb3, 0x70,     0x70,     0xcccc,  0xcccc},
 };
 
+static const struct abm_parameters abm_settings_config2[abm_defines_max_level] = {
+//  min_red  max_red  bright_pos  dark_pos  bright_gain  contrast  dev   min_knee  max_knee  blRed    blStart
+	{0xf0,   0xbf,    0x20,       0x00,     0x88,        0x99,     0xb3, 0x40,     0xe0,    0x0000,  0xcccc},
+	{0xd8,   0x85,    0x20,       0x00,     0x70,        0x90,     0xa8, 0x40,     0xc8,    0x0700,  0xb333},
+	{0xb8,   0x58,    0x20,       0x00,     0x64,        0x88,     0x78, 0x70,     0xa0,    0x7000,  0x9999},
+	{0x82,   0x40,    0x20,       0x00,     0x00,        0xb8,     0xb3, 0x70,     0x70,    0xc333,  0xb333},
+};
+
 static const struct abm_parameters * const abm_settings[] = {
 	abm_settings_config0,
 	abm_settings_config1,
+	abm_settings_config2,
 };
 
 #define NUM_AMBI_LEVEL    5