RDKB-64189: Enable ZRAM to optimize and reduce RDKB memory usage

[manedurphy]

The following changes are part of a larger effort to enable a ZRAM SWAP partition for Broadband devices:

• The state of the RFC is managed by newly-defined SysCfg key-value pairs
• Telemetry markers are reported via a new zram_stats.sh script in test-and-diagnostic which runs on a cron

[Copilot]

Pull request overview

Enables periodic ZRAM/memory-swap telemetry reporting and introduces default SysCfg keys to control the memory swap feature on ARM targets.

Changes:

• Add a crond entry for /usr/ccsp/tad/memswap_stats.sh gated by MemorySwapEnable and MemorySwapStatsIntervalMinutes.
• Define ARM factory defaults for MemorySwap* SysCfg keys (enable flag, disk size, telemetry interval, and tunables).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
source/scripts/init/service.d/service_crond.sh	Adds a conditional cron schedule for memory swap telemetry based on SysCfg flags/interval.
source/scripts/init/defaults/system_defaults_arm	Adds default SysCfg values controlling memory swap enablement, sizing, reporting interval, and tunables.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

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[apattu200]

Looks ok to me

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

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