package/mesa3d: fix vc4 neon related compile failure

package/mesa3d: fix vc4 neon related compile failure

Add mesa3d patch to add a vc4 option to disable
the optional neon support and set it dependent
on BR2_ARM_CPU_HAS_NEON.

Fixes:

  http://autobuild.buildroot.net/results/6387b0a99e1a0922811919623d9a10b0943988df

  [1086/1254] Compiling C object 'src/gallium/drivers/vc4/691f666@@vc4_neon@sta/vc4_tiling_lt_neon.c.o'.
  {standard input}: Assembler messages:
  {standard input}:334: Error: selected processor does not support `vldm r4,{q0,q1,q2,q3}' in ARM mode
  {standard input}:335: Error: selected processor does not support `vst1.8 d0,[r3],r2' in ARM mode
  {standard input}:336: Error: selected processor does not support `vst1.8 d1,[r3],r2' in ARM mode
  {standard input}:337: Error: selected processor does not support `vst1.8 d2,[r3],r2' in ARM mode
  {standard input}:338: Error: selected processor does not support `vst1.8 d3,[r3],r2' in ARM mode
  {standard input}:339: Error: selected processor does not support `vst1.8 d4,[r3],r2' in ARM mode
  {standard input}:340: Error: selected processor does not support `vst1.8 d5,[r3],r2' in ARM mode
  {standard input}:341: Error: selected processor does not support `vst1.8 d6,[r3],r2' in ARM mode

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>