samples: new mcuboot configuration

[ktaborowski]

Changes:

• all platforms: size optimization in mcuboot
• nrf54L: ed25519 signature as default (from nrf)
  mcuboot: Make ED25519 signature default for nrf54l series sdk-nrf#19148
• nrf54L10: link time optimization in mcuboot
• nrf54L10: mcuboot partition size set to 52 KB

CI parameters

Github_actions:
  #(branch, hash, pull/XXX/head)
  NRF_revision: pull/19148/head

  # Do not change after creating PR
  Create_NRF_PR: false
Jenkins:
  test-sdk-sidewalk: master

Description

JIRA ticket: KRKNWK-19763

Self review

• There is no commented code.
• There are no TODO/FIXME comments without associated issue ticket.
• Commits are properly organized.
• Change has been tested.
• Tests were updated (if applicable).

[github-actions]

Sample		diff	used	total
nrf54l15dk/nrf54l10/cpuapp:sample.sidewalk.demo	RAM	0 B	121.57 KB	0 B
	ROM	-112 B	457.8 KB	0 B
nrf54l15dk/nrf54l10/cpuapp:sample.sidewalk.demo.ble_only	RAM	0 B	106.53 KB	0 B
	ROM	-112 B	380.04 KB	0 B
nrf54l15dk/nrf54l10/cpuapp:sample.sidewalk.dut	RAM	0 B	145.32 KB	0 B
	ROM	-108 B	524.25 KB	0 B
nrf54l15dk/nrf54l10/cpuapp:sample.sidewalk.dut.ble_only	RAM	0 B	130.22 KB	0 B
	ROM	-108 B	445.97 KB	0 B
nrf54l15dk/nrf54l15/cpuapp:sample.sidewalk.demo	RAM	0 B	121.57 KB	0 B
	ROM	-108 B	457.83 KB	0 B
nrf54l15dk/nrf54l15/cpuapp:sample.sidewalk.demo.ble_only	RAM	0 B	106.53 KB	0 B
	ROM	-108 B	380.07 KB	0 B
nrf54l15dk/nrf54l15/cpuapp:sample.sidewalk.dut	RAM	0 B	145.32 KB	0 B
	ROM	-112 B	524.29 KB	0 B
nrf54l15dk/nrf54l15/cpuapp:sample.sidewalk.dut.ble_only	RAM	0 B	130.22 KB	0 B
	ROM	-112 B	446 KB	0 B
nrf54l15dk/nrf54l10/cpuapp:sample.sidewalk.dut.no_secure	RAM	0 B	145.31 KB	0 B
	ROM	-112 B	516.57 KB	0 B
nrf54l15dk/nrf54l10/cpuapp:sample.sidewalk.hello	RAM	0 B	123.02 KB	0 B
	ROM	-108 B	473.08 KB	0 B
nrf54l15dk/nrf54l10/cpuapp:sample.sidewalk.hello.ble_only	RAM	0 B	96.57 KB	0 B
	ROM	-112 B	378.36 KB	0 B
nrf54l15dk/nrf54l15/cpuapp:sample.sidewalk.dut.no_secure	RAM	0 B	145.31 KB	0 B
	ROM	-116 B	516.6 KB	0 B
nrf54l15dk/nrf54l15/cpuapp:sample.sidewalk.hello	RAM	0 B	123.02 KB	0 B
	ROM	-112 B	473.12 KB	0 B
nrf54l15dk/nrf54l15/cpuapp:sample.sidewalk.hello.ble_only	RAM	0 B	96.57 KB	0 B
	ROM	-108 B	378.39 KB	0 B
nrf54l15dk/nrf54l10/cpuapp:sample.sidewalk.hello.ble_only.release	RAM	0 B	91.94 KB	0 B
	ROM	-112 B	306.91 KB	0 B
nrf54l15dk/nrf54l10/cpuapp:sample.sidewalk.hello.release	RAM	0 B	107 KB	0 B
	ROM	-112 B	382.79 KB	0 B
nrf54l15dk/nrf54l10/cpuapp:sidewalk.test.simple_bootloader	RAM	220 B	9.92 KB	0 B
	ROM	6.88 KB	40.58 KB	0 B
nrf54l15dk/nrf54l15/cpuapp:sample.sidewalk.hello.ble_only.release	RAM	0 B	91.94 KB	0 B
	ROM	-108 B	306.94 KB	0 B
nrf54l15dk/nrf54l15/cpuapp:sample.sidewalk.hello.release	RAM	0 B	107 KB	0 B
	ROM	-108 B	382.82 KB	0 B