ARM: dts: am: Rename "ocmcram" node to "sram"
The device node name should reflect generic class of a device so rename the "ocmcram" node and its children to "sram". This will be also in sync with upcoming DT schema. No functional change. Signed-off-by: Krzysztof Kozlowski <firstname.lastname@example.org> Signed-off-by: Tony Lindgren <email@example.com>