platform/mellanox: Spelling s/platfom/platform/

Fix a misspelling of the word "platform".
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Michael Shych <michaelsh@nvidia.com>
Link: https://lore.kernel.org/r/9c8edde31e271311b7832d7677fe84aba917da8d.1653376503.git.geert@linux-m68k.orgSigned-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/mellanox/Kconfig

@@ -85,7 +85,7 @@ config NVSW_SN2201
 	depends on I2C
 	depends on REGMAP_I2C
 	help
-	  This driver provides support for the Nvidia SN2201 platfom.
+	  This driver provides support for the Nvidia SN2201 platform.
 	  The SN2201 is a highly integrated for one rack unit system with
 	  L3 management switches. It has 48 x 1Gbps RJ45 + 4 x 100G QSFP28
 	  ports in a compact 1RU form factor. The system also including a