Change default tsc calibration method to pmtimer on EFI systems (FS#56521)

PKGBUILD

@@ -22,7 +22,7 @@ _UNIFONT_VER="10.0.06"
 pkgname="grub"
 pkgdesc="GNU GRand Unified Bootloader (2)"
 pkgver=2.02
-pkgrel=3
+pkgrel=4
 epoch=2
 url="https://www.gnu.org/software/grub/"
 arch=('x86_64')
@@ -64,6 +64,7 @@ source=("https://ftp.gnu.org/gnu/${pkgname}/${pkgname}-${pkgver}.tar.xz"{,.sig}
         '0003-10_linux-detect-archlinux-initramfs.patch'
         '0004-add-GRUB_COLOR_variables.patch'
         '0005-Allow_GRUB_to_mount_ext234_filesystems_that_have_the_encryption_feature.patch'
+        '0006-tsc-Change-default-tsc-calibration-method-to-pmtimer-on-EFI-systems.patch'
         'grub.default'
         'grub.cfg')
 
@@ -76,6 +77,7 @@ sha256sums=('810b3798d316394f94096ec2797909dbf23c858e48f7b3830826b8daa06b7b0f'
             'b41e4438319136b5e74e0abdfcb64ae115393e4e15207490272c425f54026dd3'
             'a5198267ceb04dceb6d2ea7800281a42b3f91fd02da55d2cc9ea20d47273ca29'
             '535422c510a050d41efe7720dbe54de29e04bdb8f86fd5aea5feb0b24f7abe46'
+            'c38f2b2caae33008b35a37d8293d8bf13bf6fd779a4504925da1837fd007aeb5'
             '74e5dd2090a153c10a7b9599b73bb09e70fddc6a019dd41641b0f10b9d773d82'
             'c5e4f3836130c6885e9273c21f057263eba53f4b7c0e2f111f6e5f2e487a47ad')
 
@@ -99,6 +101,10 @@ prepare() {
 	patch -Np1 -i "${srcdir}/0005-Allow_GRUB_to_mount_ext234_filesystems_that_have_the_encryption_feature.patch"
 	echo
 
+	msg "Patch to change default tsc calibration method to pmtimer on EFI systems"
+	patch -Np1 -i "${srcdir}/0006-tsc-Change-default-tsc-calibration-method-to-pmtimer-on-EFI-systems.patch"
+	echo
+
 	msg "Fix DejaVuSans.ttf location so that grub-mkfont can create *.pf2 files for starfield theme"
 	sed 's|/usr/share/fonts/dejavu|/usr/share/fonts/dejavu /usr/share/fonts/TTF|g' -i "configure.ac"