m7spr: Correct manufacturer, htc to HTC

Change htc for m7spr manufacter to HTC to make the string look cleaner
in Android Device Manager and Google Play Store (commonly used by users),
as well as any app that reads ro.product.manufacturer from build.prop.
Also, HTC styles their name in print as being uppercase and generally have
it uppercase in their stock ROMs.

Change-Id: I7a7ea1d0b9be2e8c0054446e6d36dad8f6298e76
m7spr: update eri to reflect correct home and roaming modes.

Change-Id: I41239b307dd06452c6926ee8e4fd3c11d14cce5b
m7spr: update and cleanup system.prop for 4.3 ril

Change-Id: I89e080b9637f97db0fdc9cdcc100ce3531d91100
m7spr: use M7 CDMA class HTCQualcommM7CDMARIL.

Change-Id: Ia7a6482d7854cfd9ad54290c43bf7a181936e836
m7spr: remove CDMA APN list

Change-Id: I75ff5362aa5acd4602c78e52915c32a487228efa
m7spr: remove unused and depreciated flags.

Change-Id: Ia12b762c4fcaecb54dcc0e4c0f54f43768840ebc