rom_connect_internal_flash() function

Connect the SSI/QMI to the QSPI pads Restore all QSPI pad controls to their default state, and connect the SSI/QMI peripheral to the QSPI pads. \if rp2350_specific On RP2350 if a secondary flash chip select GPIO has been configured via OTP OTP_DATA_FLASH_DEVINFO, or by writing to the runtime copy of FLASH_DEVINFO in bootram, then this bank 0 GPIO is also initialised and the QMI peripheral is connected. Otherwise, bank 0 IOs are untouched. \endif