pcie: controller: prepare to enumerate bars for Type 1 endpoints

The Type 1 endpoints has 2 BARs are the same position as the Type 0
BARS 0 & 1, so reuse the generic_pcie_ctrl_type0_enumerate_bars()
for both types by passing the number of possible BARs on the endpoint.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>