pinctrl: msm: Add new EBI pintype for nand support

8909 has both sdc and nand variants. Both these
interfaces would be supported by TLMM configurable
pins. Add EBI pintype needed for nand support.

Change-Id: Ic48190e6c590566038fb448ee1a1e9a3e84d8ae7
Signed-off-by: Kishan Kumar <kishank@codeaurora.org>