x86/microcode/intel: Switch to kvmalloc()

mainline inclusion
from mainline-v6.7-rc1
commit f24f204405f9875bc539c6e88553fd5ac913c867
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I8XRMW


CVE: NA

--------------------------------

Microcode blobs are getting larger and might soon reach the kmalloc()
limit. Switch over kvmalloc().

Intel-SIG: commit f24f204405f9 x86/microcode/intel: Switch to kvmalloc().
Microcode restructuring backport.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231002115902.564323243@linutronix.de


[ Aubrey Li: amend commit log ]
Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com>