If you see the tcz directory there are files with the kernel version in it name.
Sometimes you have to compile the modules your self with picore and tc.
And there are several threads talking about that in this forum.
Search a little bit in this forum and you will be find how to do it yourself.
And i have seen some script called provides.sh to search what package the files is in.
curl -s http://tinycorelinux.net/16.x/aarch64/tcz/ | grep 6.12.15
alsa-modules-6.12.15-piCore-v8-16k.tcz
alsa-modules-6.12.15-piCore-v8.tcz
ax25-6.12.15-piCore-v8-16k.tcz
ax25-6.12.15-piCore-v8.tcz
bluetooth-6.12.15-piCore-v8-16k.tcz
bluetooth-6.12.15-piCore-v8.tcz
cdrom-6.12.15-piCore-v8-16k.tcz
cdrom-6.12.15-piCore-v8.tcz
filesystems-6.12.15-piCore-v8-16k.tcz
filesystems-6.12.15-piCore-v8.tcz
graphics-6.12.15-piCore-v8-16k.tcz
graphics-6.12.15-piCore-v8.tcz
ipv6-netfilter-6.12.15-piCore-v8-16k.tcz
ipv6-netfilter-6.12.15-piCore-v8.tcz
media-rc-6.12.15-piCore-v8-16k.tcz
media-rc-6.12.15-piCore-v8.tcz
net-bridging-6.12.15-piCore-v8-16k.tcz
net-bridging-6.12.15-piCore-v8.tcz
.........