net: ipa: define resource group/type IPA register fields

Define the fields for the {SRC,DST}_RSRC_GRP_{01,23,45,67}_RSRC_TYPE
IPA registers for all supported IPA versions.

Create enumerated types to identify fields for these IPA registers.
Use IPA_REG_STRIDE_FIELDS() to specify the field mask values defined
for these registers, for each supported version of IPA.

Use ipa_reg_encode() to build up the values to be written to these
registers.

Remove the definition of the no-longer-used *_FMASK symbols.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>