spmi: pmic-arb: u8 <= 0xff is always true

Silences this static checker warning:

 drivers/spmi/spmi-pmic-arb.c:363
 pmic_arb_write_cmd() warn: always true condition
 '(opc <= 255) => (0-255 <= 255)'

Cc: Andy Gross <agross@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index fce5c0d..96615d8 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -360,7 +360,7 @@
 		opc = PMIC_ARB_OP_EXT_WRITE;
 	else if (opc >= 0x30 && opc <= 0x37)
 		opc = PMIC_ARB_OP_EXT_WRITEL;
-	else if (opc >= 0x80 && opc <= 0xFF)
+	else if (opc >= 0x80)
 		opc = PMIC_ARB_OP_ZERO_WRITE;
 	else
 		return -EINVAL;