mesh11sd: update to version 5.1.2

mesh11sd: update to version 5.1.2

Maintainer: Rob White [email protected]

Compile tested: All

Run tested: arm_cortex-a7_neon-vfpv4, mipsel_24kc, mips_24kc, aarch64_cortex-a53; On 23.5, 24.10 and master/snapshot.

Description: mesh11sd (5.1.2)

This is a minor bugfix release.
 * Improved reading of the uci config, eliminating some discrepancies.
 * Consistently use mesh_phy_index, rather then mesh_phyindex as a config option.

The full changelog can be seen here:
https://github.com/openNDS/mesh11sd/blob/v5.1.2/ChangeLog

Signed-off-by: Rob White <[email protected]>