drm/i915/icl: Fix power well anonymous union initializers

Similarly to commit 0a445945
("drm/i915: Work around GCC anonymous union initialization bug")
we need to initialize anonymous unions inside extra braces to work
around a GCC4.4 build error.

v2:
- Fix checkpatch errors in commit log. (Paulo)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180806095843.13294-2-imre.deak@intel.com

drivers/gpu/drm/i915/intel_runtime_pm.c

@@ -2620,15 +2620,19 @@ static struct i915_power_well icl_power_wells[] = {
 		.domains = 0,
 		.ops = &hsw_power_well_ops,
 		.id = ICL_DISP_PW_1,
+		{
 			.hsw.has_fuses = true,
 		},
+	},
 	{
 		.name = "power well 2",
 		.domains = ICL_PW_2_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
 		.id = ICL_DISP_PW_2,
+		{
 			.hsw.has_fuses = true,
 		},
+	},
 	{
 		.name = "DC off",
 		.domains = ICL_DISPLAY_DC_OFF_POWER_DOMAINS,
@@ -2640,10 +2644,12 @@ static struct i915_power_well icl_power_wells[] = {
 		.domains = ICL_PW_3_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
 		.id = ICL_DISP_PW_3,
+		{
 			.hsw.irq_pipe_mask = BIT(PIPE_B),
 			.hsw.has_vga = true,
 			.hsw.has_fuses = true,
 		},
+	},
 	{
 		.name = "DDI A IO",
 		.domains = ICL_DDI_IO_A_POWER_DOMAINS,
@@ -2745,9 +2751,11 @@ static struct i915_power_well icl_power_wells[] = {
 		.domains = ICL_PW_4_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
 		.id = ICL_DISP_PW_4,
+		{
 			.hsw.has_fuses = true,
 			.hsw.irq_pipe_mask = BIT(PIPE_C),
 		},
+	},
 };
 
 static int