Merge patch series "Prevent dynamic relocations in vDSO"

The first is a fix and the second a check to make sure we don't
regress on the relocations, so I'm picking this up as a series to get
the fix into fixes.

* b4-shazam-merge:
  riscv: Check that vdso does not contain any dynamic relocations
  riscv: vdso: Prevent the compiler from inserting calls to memset()

Link: https://lore.kernel.org/r/20241016083625.136311-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>