uClibc 700 you also make same changes as for the baremetal 700:

1. Remove -mmul32x16.
2. Use -mea instead of -mEA
3. Remove -mlock
4. Remove -mxy, it doesn't make any sense for the uClibc toolchain.
5. Made -matomic default ON for the uClibc toolchain in compiler.

Signed-off-by: Yunlu Zhang <Yunlu.Zhang@synopsys.com>