layer.conf: Ignore textrel for few more recipes

The real issue is in binutils/ld inserting R_RISCV_NONE which is then
caught by textrel checker, there are binutils bugs to address this
[1] [2]

[1] https://sourceware.org/bugzilla/show_bug.cgi?id=24676
[2] https://sourceware.org/bugzilla/show_bug.cgi?id=24673



Signed-off-by: Khem Raj <raj.khem@gmail.com>