mmc: host: Update the USE_PIO_FOR_EMMC_TUNING quirk value

SDHCI_QUIRK2_USE_PIO_FOR_EMMC_TUNING quirk is defined with a bit position
of 23 (1 << 23). Since this bit position is already defined for some other
quirk, update its bit position to next available one.

Change-Id: I878b3c0b3f4cb32ecaf27fc77ccdfb7d4215a39c
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>