dt-bindings: mmc: Correct typo "upto" to "up to"

The word "upto" is a typo for "up to". Correct this typo in the
mmc-controller-common binding documentation.

Signed-off-by: Akiyoshi Kurita <[email protected]>
Signed-off-by: Rob Herring (Arm) <[email protected]>

Author: redadmin-org

Documentation/devicetree/bindings/mmc/mmc-controller-common.yaml

@@ -85,7 +85,7 @@ properties:
         - for eMMC, the maximum supported frequency is 200MHz,
         - for SD/SDIO cards the SDR104 mode has a max supported
           frequency of 208MHz,
-        - some mmc host controllers do support a max frequency upto
+        - some mmc host controllers do support a max frequency up to
           384MHz.
       So, lets keep the maximum supported value here.