Fix headers include variable

CONFIG_TRUSTY=m sets ccflags-m which is not
a valid build variable. Always add the include paths
to ccflags-y even when building the Trusty drivers
as modules since that is the only supported variable.

Bug: 364748249
Change-Id: I8f4ce05c5453274307f0ce7db3da0d63cfe42957
1 file changed