pinctrl: sh-pfc: r8a7795: Fix hscif2_clk_b and hscif4_ctrl

Fix typos in hscif2_clk_b_mux[] and hscif4_ctrl_mux[].

Fixes: a56069c4 ("pinctrl: sh-pfc: r8a7795: Add HSCIF pins, groups, and functions")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>