boards: arm: enable CONFIG_USB_DC_HAS_HS_SUPPORT

enable CONFIG_USB_DC_HAS_HS_SUPPORT when we use only OTG_HS
and not OTG_FS.
in that case TEST_BULK_EP_MPS	(Endpoint max packet size)
equal 512 and not 64
it is the case for nucleo_h723zg and for nucleo_h7a3zi_q


Signed-off-by: Marc Desvaux <marc.desvaux-ext@st.com>