fixup! [SPIN] Switch to Tizen 2.4 Platform version
Patch fixes two things.
1. Add new define TIZEN_V_2_4 and resurrect the codes that were
under legacy TIZEN_V_2_3 guard.
2. Change default value for gyp variable chromium_efl_tizen_version as 2.4.
This is necessary for SPIN OBS build where we cannot pass additional
defines to gbs command as we did in build/build_mobile.sh.
Reviewed by: Min-Soo Koo, Piotr Tworek
Change-Id: Iffe905682b4d043f6927f71d1fe1c0043f018e15
Signed-off-by: SeungSeop Park <sns.park@samsung.com>