linux-mfgtool.inc: Fix dynamic packages handling

In case we have kernel modules, a runtime dependency or recommendation
can break the dependency resolution algorithm of BitBake resulting on
a conflict like:

,----[ Provider conflict error ]
| ERROR: Trying to resolve runtime dependency kernel-module-nfs resulted
|     in conflicting PREFERRED_PROVIDER entries being found.
| The providers found were:
|     ['.../meta-customer/recipes-kernel/linux/linux-customer-mfgtool_3.10.17.bb',
|      '.../meta-customer/recipes-kernel/linux/linux-customer_3.10.17.bb']
| The PREFERRED_PROVIDER entries resulting in this conflict were:
|     ['PREFERRED_PROVIDER_linux-mfgtool = mfgtool-linux-customer',
|      'PREFERRED_PROVIDER_virtual/kernel = linux-customer']
`----

To fix this, we need to rename the dynamic packages and hence change
the built binaries, solving the conflict.

Change-Id: I8becb8a4a839494720711f60f51515aba0140c68
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>