Split P8 and P9 Hostboot and OCC packages

This was causing a couple of issues:
1) increased complexity in build files
2) It breaks the pkg-version patch detection/checksum
3) Failing to apply patches to would silently fail

The split makes this a bit easier and requires less custom code.

We keep the P9 hostboot/occ named hostboot/occ, so that day-to-day,
nobody notices a difference. The only difference you'll notice
is if doing POWER8 hostboot/occ development, as the package name
will be 'hostboot-p8' or 'occ-p8'.

Fixes: https://github.com/open-power/op-build/issues/876
Fixes: https://github.com/open-power/op-build/issues/1194
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
diff --git a/openpower/package/hostboot/hostboot.mk b/openpower/package/hostboot/hostboot.mk
index c4b907f..cb98e32 100644
--- a/openpower/package/hostboot/hostboot.mk
+++ b/openpower/package/hostboot/hostboot.mk
@@ -1,12 +1,10 @@
 ################################################################################
 #
-# hostboot
+# hostboot for POWER9
 #
 ################################################################################
-HOSTBOOT_VERSION_BRANCH_MASTER_P8 ?= d3025f5d7ddd0723946bb54fcb471d2bf1fd2da4
-HOSTBOOT_VERSION_BRANCH_MASTER ?= c38615a583b7f19c0ae6a5a152b575fe61ff3d2a
 
-HOSTBOOT_VERSION ?= $(if $(BR2_OPENPOWER_POWER9),$(HOSTBOOT_VERSION_BRANCH_MASTER),$(HOSTBOOT_VERSION_BRANCH_MASTER_P8))
+HOSTBOOT_VERSION ?= c38615a583b7f19c0ae6a5a152b575fe61ff3d2a
 HOSTBOOT_SITE ?= $(call github,open-power,hostboot,$(HOSTBOOT_VERSION))
 
 HOSTBOOT_LICENSE = Apache-2.0
@@ -21,23 +19,6 @@
     OPENPOWER_BUILD=1 CROSS_PREFIX=$(TARGET_CROSS) HOST_PREFIX="" HOST_BINUTILS_DIR=$(HOST_BINUTILS_DIR) \
     HOSTBOOT_VERSION=`cat $(HOSTBOOT_VERSION_FILE)`
 
-define HOSTBOOT_APPLY_PATCHES
-       if [ "$(BR2_OPENPOWER_POWER9)" == "y" ]; then \
-           $(APPLY_PATCHES) $(@D) $(BR2_EXTERNAL_OP_BUILD_PATH)/package/hostboot/p9Patches \*.patch; \
-           if [ -d $(BR2_EXTERNAL_OP_BUILD_PATH)/custom/patches/hostboot/p9Patches ]; then \
-               $(APPLY_PATCHES) $(@D) $(BR2_EXTERNAL_OP_BUILD_PATH)/custom/patches/hostboot/p9Patches \*.patch; \
-           fi; \
-       fi; \
-       if [ "$(BR2_OPENPOWER_POWER8)" == "y" ]; then \
-           $(APPLY_PATCHES) $(@D) $(BR2_EXTERNAL_OP_BUILD_PATH)/package/hostboot/p8Patches \*.patch; \
-           if [ -d $(BR2_EXTERNAL_OP_BUILD_PATH)/custom/patches/hostboot/p8Patches ]; then \
-               $(APPLY_PATCHES) $(@D) $(BR2_EXTERNAL_OP_BUILD_PATH)/custom/patches/hostboot/p8Patches \*.patch; \
-           fi; \
-       fi;
-endef
-
-HOSTBOOT_POST_PATCH_HOOKS += HOSTBOOT_APPLY_PATCHES
-
 define HOSTBOOT_BUILD_CMDS
         $(HOSTBOOT_ENV_VARS) bash -c 'cd $(@D) && source ./env.bash && $(MAKE)'
 endef