Anup Patel 1ee745fe57 lib: Use AMO instructions whenever __riscv_atomic is defined ...

We should use AMO instructions whenever __riscv_atomic is
defined (i.e. atomics are supported). We use LR/SC only when
__riscv_atomic is not defined.

Signed-off-by: Anup Patel <anup.patel@wdc.com>

2019-01-21 21:12:48 +05:30

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