hardware_samsung: exynos4: fix compilation errors

PS5: rebase after https://gerrit.omnirom.org/#/c/10449/ and https://gerrit.omnirom.org/#/c/10448/

Conflicts:
	ril/libsecril-client-sap/Android.mk
	ril/libsecril-client/Android.mk
	ril/xmm6260/libril/Android.mk
	ril/xmm6262/libril/Android.mk

Change-Id: I38b3aac7ef59597488bfc2a1f0227ec15cffb051