Clean up defines in src/platform/BUILD.gn

[mspang]

• Separate true/false defines are no longer required, as the header
  generator maps "true" to 1 and "false" to 0.

• We should be setting false config #defines to 0 so that we
  can build with -Wundef

Move defines into the main list where possible so that they are always
added to the generated header.

Tested by:

git revert -n HEAD
./gn_build.sh enable_efr32_builds=true enable_qpg6100_builds=true is_debug=false
cp -a --reflink out/debug out/debug_old
git reset --hard
./gn_build.sh enable_efr32_builds=true enable_qpg6100_builds=true is_debug=false
find out/debug -name CHIPDeviceBuildConfig.h | while read x; do diff -u <(sort $(echo $x | sed s,debug,debug_old,)) <(sort $x); done|less

[todo]

should be fatal for development. Change once bugs are fixed

connectedhomeip/src/platform/BUILD.gn

Lines 65 to 75 in bcadfbf

	# TODO: should be fatal for development. Change once bugs are fixed
	chip_stack_lock_tracking = "log"
	} else {
	# TODO: may want to enable at least logging for embedded to find bugs
	# this needs tuning depending on how many resources various platforms have
	# available (mainly flash size)
	chip_stack_lock_tracking = "none"
	}
	} else {
	assert(
	chip_stack_lock_tracking == "none" ||

---

This comment was generated by todo based on a TODO comment in bcadfbf in #7575. cc @mspang.

[todo]

may want to enable at least logging for embedded to find bugs

connectedhomeip/src/platform/BUILD.gn

Lines 68 to 78 in bcadfbf

	# TODO: may want to enable at least logging for embedded to find bugs
	# this needs tuning depending on how many resources various platforms have
	# available (mainly flash size)
	chip_stack_lock_tracking = "none"
	}
	} else {
	assert(
	chip_stack_lock_tracking == "none" ||
	chip_stack_lock_tracking == "log" ||
	chip_stack_lock_tracking == "fatal",
	"Please select a valid value for chip_stack_lock_tracking: auto, none, log, fatal")

---

This comment was generated by todo based on a TODO comment in bcadfbf in #7575. cc @mspang.