spmi: pmic-arb: replace the writel_relaxed with __raw_writel

Replace the writel_relaxed with __raw_writel to avoid byte swapping
in pmic_arb_write_data() function. That way the code is independent
of the CPU endianness.

Fixes: 111a10bf3e ("spmi: pmic-arb: rename spmi_pmic_arb_dev to
spmi_pmic_arb")
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/spmi/spmi-pmic-arb.c

@@ -230,7 +230,7 @@ static void pmic_arb_write_data(struct spmi_pmic_arb *pmic_arb, const u8 *buf,
 	u32 data = 0;
 
 	memcpy(&data, buf, (bc & 3) + 1);
-	pmic_arb_base_write(pmic_arb, reg, data);
+	__raw_writel(data, pmic_arb->wr_base + reg);
 }
 
 static int pmic_arb_wait_for_done(struct spmi_controller *ctrl,