clk: imx8mp: Fix 24M and 32k clock

Fix registration of 24M and 32k clock, those got applied or rebased
incorrectly, so fill in the correct code.

Fixes: 7a2c3be9 ("clk: imx8mp: Fill in DWC3 USB, USB PHY, HSIOMIX clock")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Ye Li <ye.li@nxp.com>