configs: verdin-imx95: enable PCI_INIT_R

Currently, the ENETC device on iMX95 is not enumerated before network
initialization because pci_init() is not called. As a result, no
Ethernet device is registered.

Enable CONFIG_PCI_INIT_R so the PCI buses are enumerated early enough
for the Ethernet Controller to be detected and used.

Fixes: 60d8255d8dc0 ("board: toradex: add Toradex Verdin iMX95")
Signed-off-by: Franz Schnyder <franz.schnyder@toradex.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>