USB: Remove __attribute__ ((packed)) for struct ehci_hccr and ehci_hcor

USB: Remove __attribute__ ((packed)) for struct ehci_hccr and ehci_hcor

Remove __attribute__ ((packed)) to prevent byte access to soc
registers in some gcc versions.

Having patches to enable ehci for the BeagleBoard lying around for
several months, this one was the show-stopper.

Switched to align(4), rather than remove the attribute, per suggestion
from Alexander.

Credits have to go to Laine Walker-Avina <[email protected]> for
finding the problem.

Signed-off-by: Jason Kridner <[email protected]>
Signed-off-by: Joel A Fernandes <[email protected]>
Cc: Alexander Holler <[email protected]>
Cc: Sandeep Paulraj <[email protected]>
Signed-off-by: Sandeep Paulraj <[email protected]>