USB: EHCI: Compile ehci-msm2.c which uses new scheme
USB: EHCI: Compile ehci-msm2.c which uses new scheme

Separately compile ehci-msm2.c which uses new scheme
of ehci-hcd as library.

Change-Id: I59626652ca2e02d382f36ce3f6a79d36f3f10e0a
Signed-off-by: Manu Gautam <51907cac86db5f2ed57a4ac58c042ecc27c0b352@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas