[Patch] accelerants/radeon: fix gcc6 build

[mt]

Reindent source code, to fix gcc6 '-Werror=misleading-indentation' warnings.

Cc /home/haiku/haiku/haiku/generated-gcc6/objects/haiku/x86/release/add-ons/accelerants/radeon/Cursor.o 
/home/haiku/haiku/haiku/src/add-ons/accelerants/radeon/Cursor.c: In function 'moveOneCursor':
/home/haiku/haiku/haiku/src/add-ons/accelerants/radeon/Cursor.c:193:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if( y < 0 )
     ^~
/home/haiku/haiku/haiku/src/add-ons/accelerants/radeon/Cursor.c:196:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  if( crtc_idx == 0 ) {
  ^~
cc1: all warnings being treated as errors

Cc /home/haiku/haiku/haiku/generated-gcc6/objects/haiku/x86/release/add-ons/accelerants/radeon/impactv.o 
/home/haiku/haiku/haiku/src/add-ons/accelerants/radeon/impactv.c: In function 'Radeon_CalcImpacTVRegisters':
/home/haiku/haiku/haiku/src/add-ons/accelerants/radeon/impactv.c:512:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if( !internal_encoder )
     ^~
/home/haiku/haiku/haiku/src/add-ons/accelerants/radeon/impactv.c:515:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  values->tv_htotal = mode->timing.h_total - 1;
  ^~~~~~
cc1: all warnings being treated as errors

[korli]

+1, but coding style could be improved.

[waddlesplash]

Applied in hrev50308. Thanks!