CVE-2026-98931 mtd: spinand: fix NULL pointer dereference with no ECC engine

In the Linux kernel, the following vulnerability has been resolved: mtd: spinand: fix NULL pointer dereference with no ECC engine When "nand-no-ecc-engine" is set in DT, nanddevgeteccengine takes the NANDECCENGINETYPENONE path and returns success while leaving nand-ecc.engine NULL. The SPI-NAND...