WARNING: please write a help paragraph that fully describes the config symbol
#26: FILE: drivers/net/ethernet/stmicro/stmmac/Kconfig:124:
+config DWMAC_NUVOTON
+	tristate "Nuvoton MA35 dwmac support"
+	default ARCH_MA35
+	depends on OF && (ARCH_MA35 || COMPILE_TEST)
+	select MFD_SYSCON
+	help
+	  Support for Ethernet controller on Nuvoton MA35 series SoC.
+
+	  This selects the Nuvoton MA35 series SoC glue layer support
+	  for the stmmac device driver.
+

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#53: 
new file mode 100644

WARNING: line length of 83 exceeds 80 columns
#95: FILE: drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c:38:
+nuvoton_gmac_setup(struct platform_device *pdev, struct plat_stmmacenet_data *plat)

WARNING: line length of 93 exceeds 80 columns
#108: FILE: drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c:51:
+		syscon_regmap_lookup_by_phandle_args(dev->of_node, "nuvoton,sys", 1, &macid);

WARNING: Prefer "GPL" over "GPL v2" - see commit bf7fbeeae6db ("module: Cure the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity")
#237: FILE: drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c:180:
+MODULE_LICENSE("GPL v2");

total: 0 errors, 5 warnings, 0 checks, 204 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit cb1d990315e0 ("net: stmmac: dwmac-nuvoton: Add dwmac glue for Nuvoton MA35 family") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 5 warnings, 0 checks, 204 lines checked