Makefile: modified some optimizing build flags

* These are common linaro build flags used by many developers
for optimizing build-option.

* Remove pipe also.

Testing ..

Signed-off-by: Keff <funnykeff91@gmail.com>
Increased audio loudness (from Skywalker) (rev 2)
lowered maximum volume about 10% (compared to version 1)
to try to reduce ugly sounds
Makefile: build module as -03 when necessary

Signed-off-by: Keff <funnykeff91@gmail.com>
iosched & cpufreq_gov: bring great stuff from CastagnaIT

https://github.com/CastagnaIT/samsung-kernel-msm7x30/commit/628e2edbaf8ef997236a1345749829f6314939c8
https://github.com/CastagnaIT/samsung-kernel-msm7x30/commit/6911b34ee99ac221f62b9867f0791e373d01e743

Signed-off-by: Keff <funnykeff91@gmail.com>
patch-3.4.46-47