[drivers][mtd] fix CFI sector table off-by-one bound

Complete the CFI erase-region and sector-table bounds hardening after #11558:
- When sect_count >= RT_ARRAY_SIZE(fdev->sect), log the actual >= limit
  using %lu and fail probe with -RT_EINVAL via goto _fail instead of only
  breaking the inner erase-region loop and registering a truncated flash.
- Reject zero sector counts, invalid size_ratio/dev_size shifts, and
  ioremap failures during probe, guard cfi_flash_find() against
  sect_count == 0 underflow, and clear fdev->sect[0] after rt_iounmap()
  in _fail to avoid double-unmap from cfi_flash_probe().

Fixes #11272

0 files changed, 0 insertions, 0 deletions