[Change and sync linux version from OpenWRT]

[Description]
Change and sync linux version from OpenWRT
1. sync kernel to Openwrt21.02 : v5.4.188
2. sync mtk kernel patch from mtk_feed

[Release-log]
N/A

diff --git a/recipes-kernel/linux/linux-mediatek-5.4/generic/pending-5.4/755-net-sfp-fix-hwmon.patch b/recipes-kernel/linux/linux-mediatek-5.4/generic/pending-5.4/755-net-sfp-fix-hwmon.patch
index a18e480..be3b19b 100644
--- a/recipes-kernel/linux/linux-mediatek-5.4/generic/pending-5.4/755-net-sfp-fix-hwmon.patch
+++ b/recipes-kernel/linux/linux-mediatek-5.4/generic/pending-5.4/755-net-sfp-fix-hwmon.patch
@@ -15,7 +15,7 @@
 
 --- a/drivers/net/phy/sfp.c
 +++ b/drivers/net/phy/sfp.c
-@@ -1883,6 +1883,10 @@ static void sfp_sm_module(struct sfp *sf
+@@ -1891,6 +1891,10 @@ static void sfp_sm_module(struct sfp *sf
  			break;
  		}
  
@@ -26,7 +26,7 @@
  		sfp_sm_mod_next(sfp, SFP_MOD_WAITDEV, 0);
  		/* fall through */
  	case SFP_MOD_WAITDEV:
-@@ -1932,15 +1936,6 @@ static void sfp_sm_module(struct sfp *sf
+@@ -1940,15 +1944,6 @@ static void sfp_sm_module(struct sfp *sf
  	case SFP_MOD_ERROR:
  		break;
  	}