[zynq][spiflash] write enable before using the cr1 write routine
[zynq][spiflash] write enable before using the cr1 write routine

Change-Id: Id3dbffee2438bfca3208884b4a46cffeb79eccf2

hollanderic/lkstuff,littlekernel/lk,GCrean/lk,grub4android/lk,srodrig1/lk,travisg/lk,nvll/lk,M1cha/lk,nvll/lk,grub4android/lk,skabet/lk,M1cha/lk,sndnvaps/lk,travisg/lk,ErikCorryGoogle/lk,GCrean/lk,srodrig1/lk,grub4android/lk,travisg/lk,skabet/lk,skabet/lk,srodrig1/lk,littlekernel/lk,GCrean/lk,littlekernel/lk,srodrig1/lk,hollanderic/lkstuff,skabet/lk,minglun-tsai/lk,srodrig1/lk,skabet/lk,travisg/lk,nvll/lk,grub4android/lk,sndnvaps/lk,ErikCorryGoogle/lk,minglun-tsai/lk,littlekernel/lk,minglun-tsai/lk,nvll/lk,hollanderic/lkstuff,GCrean/lk,ErikCorryGoogle/lk,nvll/lk,hollanderic/lkstuff,grub4android/lk,ErikCorryGoogle/lk,minglun-tsai/lk,sndnvaps/lk,M1cha/lk,M1cha/lk,M1cha/lk,GCrean/lk,sndnvaps/lk,sndnvaps/lk