[project][pc-x86-test] add libm to pc tests
[project][pc-x86-test] add libm to pc tests

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