spec: remove ambiguity of .so provide location for build systems

spec: remove ambiguity of .so provide location for build systems

In order to remove "have choice for libscl-core.so:
libscl-core-profile_common and libscl-core-profile_wearable",
we manually add "Provides: libscl-core.so" at the main
package.

Although there will be no more libscl-core-profile_common,
image creators can still use libscl-core-profile_common because
libsc-core Provides profile_common as "virtual" package.

Change-Id: I143e6db9d8d111ccb5ec65aec8e64116b3cb4c8e
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>