scfw: add additional controls for pmic i2c access

scfw: add additional controls for pmic i2c access

Just re-apply header file changes.

These can be used as follows:

int pmic_i2c_read(unsigned reg, unsigned *val)
{
        sc_err_t err;
        err = sc_misc_set_control(SC_IPC_CH, SC_R_BOARD_R0, SC_C_PMIC_I2C_READ_REG, reg);
        err |= sc_misc_get_control(SC_IPC_CH, SC_R_BOARD_R0, SC_C_PMIC_I2C, val);
        return err != SC_ERR_NONE;
}

int pmic_i2c_write(unsigned reg, unsigned val)
{
        sc_err_t err;
        val = (val & 0xff) | ((reg & 0xff) << 8);
        err = sc_misc_set_control(SC_IPC_CH, SC_R_BOARD_R0, SC_C_PMIC_I2C, val);
        return err != SC_ERR_NONE;
}

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
(cherry picked from commit a06a2add79559de31f76ef9a3aedef365fbc4351)
(cherry picked from commit 8f160f98321c4f23184c919761fc96e6be0e7c96)
(cherry picked from commit c33340cdc5546d43646ca0ee26fb3272d2ace6e1)
(cherry picked from commit e3d05e73c6de25c88725598f060d46fca1627109)
(cherry picked from commit b63a56511f84fc5c60d8f941f4dae9aa3ec163fa)