drm/radeon/kms: fix bad cast/shift in evergreen.c

Missing parens.

fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=30718

Reported-by: Dave Gilbert <freedesktop@treblig.org>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

authored by Alex Deucher and committed by Dave Airlie d31dba58 40f76d81

+1 -1
+1 -1
drivers/gpu/drm/radeon/evergreen.c
··· 1137 1137 1138 1138 WREG32(RCU_IND_INDEX, 0x203); 1139 1139 efuse_straps_3 = RREG32(RCU_IND_DATA); 1140 - efuse_box_bit_127_124 = (u8)(efuse_straps_3 & 0xF0000000) >> 28; 1140 + efuse_box_bit_127_124 = (u8)((efuse_straps_3 & 0xF0000000) >> 28); 1141 1141 1142 1142 switch(efuse_box_bit_127_124) { 1143 1143 case 0x0: