build: Reorder build variables alphabetically
When build variables are assigned or processed en masse, they'd appear
neater in alphabetical order.

Static initializations are moved to a separate file,
make_helpers/defaults.mk, which in itself is sorted alphabetically.

No functional changes.

Change-Id: I966010042b33de6b67592fb9ffcef8fc44d7d128
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
1 parent 01920cf commit 2fae4b1e0714685a60ad278ce302fdb752543b5f
@Jeenu Viswambharan Jeenu Viswambharan authored on 24 Oct 2016
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make_helpers/defaults.mk 0 → 100644