tools/ccache: bump to 4.8

Release Notes:
https://ccache.dev/releasenotes.html#_ccache_4_8

Signed-off-by: Linhui Liu <[email protected]>

tools/ccache/Makefile

@@ -7,11 +7,11 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ccache
-PKG_VERSION:=4.7.4
+PKG_VERSION:=4.8
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://github.com/ccache/ccache/releases/download/v$(PKG_VERSION)
-PKG_HASH:=df0c64d15d3efaf0b4f6837dd6b1467e40eeaaa807db25ce79c3a08a46a84e36
+PKG_HASH:=b963ee3bf88d7266b8a0565e4ba685d5666357f0a7e364ed98adb0dc1191fcbb
 
 include $(INCLUDE_DIR)/host-build.mk
 include $(INCLUDE_DIR)/cmake.mk

tools/ccache/patches/100-honour-copts.patch

@@ -1,6 +1,6 @@
 --- a/src/ccache.cpp
 +++ b/src/ccache.cpp
-@@ -1779,6 +1779,7 @@ get_manifest_key(Context& ctx, Hash& has
+@@ -1813,6 +1813,7 @@ get_manifest_key(Context& ctx, Hash& has
                             "CPLUS_INCLUDE_PATH",
                             "OBJC_INCLUDE_PATH",
                             "OBJCPLUS_INCLUDE_PATH", // clang