[platform][lpc15xx] rename an ERR macro to not collide with lk's
[platform][lpc15xx] rename an ERR macro to not collide with lk's

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