cogl-1.0: Add libcogl-path package

cogl-1.0: Add libcogl-path package

The new library needs to be put in a specific package, or rootfs
generation fails as:

,----[ Error in rootfs generation ]
| Updating cache...               ########################### [100%]
| Computing transaction...error: Can't install
|   libclutter-1.0-0-1.18.2-r0@cortexa9hf_vfp_neon_mx6: unable to
|   install provider for libcogl-path.so.20:
|      error: libcogl-path20-1.18.2-r0@cortexa9hf_vfp_neon_mx6 is
|        conflicted by libcogl20-1.18.2-r0@cortexa9hf_vfp_neon_mx6
`----

Upstream split this library out from libcogl20.so, sothe libcogl package
no longer gets renamed to libcogl20 as it contains multiple libraries.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>