Revert "drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to...

Revert "drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines"

This reverts commit 10117450.

Causes a crash.

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=109487Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 4.19

drivers/gpu/drm/amd/display/dc/calcs/Makefile

@@ -30,7 +30,7 @@ else ifneq ($(call cc-option, -mstack-alignment=16),)
 	cc_stack_align := -mstack-alignment=16
 endif
 
-calcs_ccflags := -mhard-float -msse -msse2 $(cc_stack_align)
+calcs_ccflags := -mhard-float -msse $(cc_stack_align)
 
 CFLAGS_dcn_calcs.o := $(calcs_ccflags)
 CFLAGS_dcn_calc_auto.o := $(calcs_ccflags)

drivers/gpu/drm/amd/display/dc/dml/Makefile

@@ -30,7 +30,7 @@ else ifneq ($(call cc-option, -mstack-alignment=16),)
 	cc_stack_align := -mstack-alignment=16
 endif
 
-dml_ccflags := -mhard-float -msse -msse2 $(cc_stack_align)
+dml_ccflags := -mhard-float -msse $(cc_stack_align)
 
 CFLAGS_display_mode_lib.o := $(dml_ccflags)
 CFLAGS_display_pipe_clocks.o := $(dml_ccflags)